United States Secretary of Defense

Secretary of Defense of the
United States of America

Seal of the Department of Defense[1]

Incumbent
James Mattis

since January 20, 2017
United States Department of Defense
Office of the Secretary of Defense
Style Mr. Secretary
Member of The Cabinet
National Security Council
Reports to The President
Seat The Pentagon, Arlington County, Virginia, U.S.
Appointer The President
with Senate advice and consent
Term length No fixed term
Constituting instrument 10 U.S.C. § 113
50 U.S.C. § 401
Precursor Secretary of War
Secretary of the Navy
Inaugural holder James Forrestal
Formation September 17, 1947 (1947-09-17)
Succession Sixth[3]
Deputy Deputy Secretary of Defense
Salary Executive Schedule, Level 1[4]
Website Defense.gov

The Secretary of Defense (SecDef) is the leader and chief executive officer of the Department of Defense, an Executive Department of the Government of the United States of America.[5][6][7] The Secretary of Defense's power over the United States military is second only to that of the President.[8] This position corresponds to what is generally known as a Defense Minister in many other countries.[9] The Secretary of Defense is appointed by the President with the advice and consent of the Senate, and is by custom a member of the Cabinet and by law a member of the National Security Council.[10]

Secretary of Defense is a statutory office, and the general provision in 10 U.S.C. § 113 provides that the Secretary of Defense has "authority, direction and control over the Department of Defense", and is further designated by the same statute as "the principal assistant to the President in all matters relating to the Department of Defense".[11] Ensuring civilian control of the military, an individual may not be appointed as Secretary of Defense within seven years after relief from active duty as a commissioned officer of a regular (i.e., non-reserve) component of an armed force.[12]

The Secretary of Defense is in the chain of command and exercises command and control, for both operational and administrative purposes subject only to the orders of the President, over all Department of Defense forces: the Army, Marine Corps, Navy, and Air Force. This is also extended to the United States Coast Guard during any period of time in which its command and control is transferred to the Department of Defense.[13][14][15][16][17] Only the Secretary of Defense (or the President) can authorize the transfer of operational control of forces between the three Military Departments (the departments of the Army, Navy, and Air Force) and the nine Combatant Commands (Africa Command, Central Command, European Command, Northern Command, Pacific Command, Southern Command, Special Operations Command, Strategic Command, Transportation Command).[13] Because the Office of Secretary of Defense is vested with legal powers which exceed those of any commissioned officer, and is second only to the President in the military hierarchy, it has sometimes unofficially been referred to as a de facto "deputy commander-in-chief".[18][19][20] The Chairman of the Joint Chiefs of Staff is the principal military adviser to the Secretary of Defense and the President, and while the Chairman may assist the Secretary and President in their command functions, the Chairman is not in the chain of command.[21]

The Secretary of Defense, Secretary of State, the Attorney General, and the Secretary of the Treasury are generally regarded as the four most important cabinet officials because of the importance of their departments.[22]

The current Secretary of Defense is retired United States Marine Corps general James Mattis, who was confirmed and sworn in on January 20, 2017.[23]

History

Seal of the National Military Establishment (1947–1949), which was reorganized into the Department of Defense.

The Army, Navy, and Marine Corps were established in 1775, in concurrence with the American Revolution. The War Department, headed by the Secretary of War, was created by Act of Congress in 1789 and was responsible for both the Army and Navy until the founding of a separate Department of the Navy in 1798.

Based on the experiences of World War II, proposals were soon made on how to more effectively manage the large combined military establishment. The Army generally favored centralization while the Navy had institutional preferences for decentralization and the status quo. The resulting National Security Act of 1947 was largely a compromise between these divergent viewpoints. The Act merged the Department of War (which was renamed as the Department of the Army) with the Department of the Navy to form the National Military Establishment (NME), presided over by the Secretary of Defense. The Act also separated the Army Air Forces (known before and very early in the war as the Army Air Corps) from the Department of the Army to become its own branch of service, the Department of the Air Force. (Each branch was provided with its own Secretary.) At first, each of the service secretaries maintained quasi-cabinet status. The first Secretary of Defense, James Forrestal, who in his previous capacity as Secretary of the Navy had opposed creation of the new position, found it difficult to exercise authority over the other branches with the limited powers his office had at the time. To address this and other problems, the National Security Act was amended in 1949 to further consolidate the national defense structure in order to reduce interservice rivalry, directly subordinate the Secretaries of the Army, the Navy and the Air Force to the Secretary of Defense in the chain of command, and rename the National Military Establishment as the Department of Defense, making it one Executive Department. The position of the Deputy Secretary of Defense, the number two position in the department, was also created at this time.

The general trend since 1949 has been to further centralize management in the Department of Defense, elevating the status and authorities of civilian OSD appointees and defense-wide organizations at the expense of the military departments and the services within them. The last major revision of the statutory framework concerning the position was done in the Goldwater–Nichols Department of Defense Reorganization Act of 1986. In particular, it elevated the status of joint service for commissioned officers, making it in practice a requirement before appointments to general officer and flag officer grades could be made.

Powers and functions

The Secretary of War [now Secretary of Defense] is the regular constitutional organ of the President for the administration of the military establishment of the nation; and rules and orders publicly promulgated through him must be received as the acts of the executive, and as such, be binding upon all within the sphere of his legal and constitutional authority. Such regulations cannot be questioned or denied because they may be thought unwise or mistaken. .

United States v. Eliason, 41 U.S. 291 (1842)

Nor is it necessary for the Secretary of War [now Secretary of Defense] in promulgating such rules or orders to state that they emanate from the President, for the presumption is that the Secretary is acting with the President's approbation and under his direction.

In re Brodie, 128 Fed. 668 (CCA 8th 1904)

Department of Defense organizational chart (December 2013)

The Secretary of Defense, appointed by the President with the advice and consent of the Senate, is by federal law (10 U.S.C. § 113) the head of the Department of Defense, "the principal assistant to the President in all matters relating to Department of Defense", and has "authority, direction and control over the Department of Defense". Because the Constitution vests all military authority in Congress and the President, the statutory authority of the Secretary of Defense is derived from their constitutional authorities. Since it is impractical for either Congress or the President to participate in every piece of Department of Defense affairs, the Secretary of Defense, and the Secretary's subordinate officials generally exercise military authority.

As the head of DoD, all officials, employees and service members are "under" the Secretary of Defense. Some of those high-ranking officials, civil and military (outside of OSD and the Joint Staff) are: the Secretary of the Army, Secretary of the Navy, and Secretary of the Air Force, Army Chief of Staff, Commandant of the Marine Corps, Chief of Naval Operations, and Air Force Chief of Staff, Chief of the National Guard Bureau and the Combatant Commanders of the Combatant Commands. All of these high-ranking positions, civil and military, require Senate confirmation.

The Department of Defense is composed of the Office of the Secretary of Defense (OSD), the Joint Chiefs of Staff (JCS) and the Joint Staff (JS), Office of the Inspector General (DODIG), the Combatant Commands, the Military Departments (Department of the Army (DA), Department of the Navy (DON) & Department of the Air Force (DAF)), the Defense Agencies and DoD Field Activities, the National Guard Bureau (NGB), and such other offices, agencies, activities, organizations, and commands established or designated by law, or by the President or by the Secretary of Defense.

Department of Defense Directive 5100.01 describes the organizational relationships within the Department, and is the foundational issuance for delineating the major functions of the Department. The latest version, signed by former Secretary of Defense Robert Gates in December 2010, is the first major re-write since 1987.[24][25]

Office of the Secretary of Defense

The Secretary's principally civilian staff element is called the Office of the Secretary of Defense (OSD) and is composed of the Deputy Secretary of Defense (DEPSECDEF) and five Under Secretaries of Defense in the fields of Acquisition, Technology & Logistics, Comptroller/Chief Financial Officer, Intelligence, Personnel & Readiness, and Policy; several Assistant Secretaries of Defense; other directors and the staffs under them.

The name of the principally military staff organization, organized under the Chairman of the Joint Chiefs of Staff, is the Joint Staff (JS).

Awards and decorations

The Defense Distinguished Service Medal (DDSM), the Defense Superior Service Medal (DSSM), the Defense Meritorious Service Medal (DMSM), the Joint Service Commendation Medal (JSCM) and the Joint Service Achievement Medal (JSAM) are awarded, to military personnel for service in joint duty assignments, in the name of the Secretary of Defense. In addition, there is the Joint Meritorious Unit Award (JMUA), which is the only ribbon (as in non-medal) and unit award issued to joint DoD activities, also issued in the name of the Secretary of Defense.

The DDSM is analogous to the distinguished services medals issued by the military departments (i.e. Army Distinguished Service Medal, Navy Distinguished Service Medal & Air Force Distinguished Service Medal), the DSSM corresponds to the Legion of Merit, the DMSM to the Meritorious Service Medal, the JSCM to the service commendation medals, and the JSAM to the achievement medals issued by the services. While the approval authority for DSSM, DMSM, JSCM, JSAM and JMUA is delegated to inferior DoD officials: the DDSM can only be awarded by the Secretary of Defense.

Recommendations for the Medal of Honor (MOH), formally endorsed in writing by the Secretary of the Military Department concerned and the Chairman of the Joint Chiefs of Staff, are processed through the Under Secretary of Defense for Personnel and Readiness, and such recommendations be must approved by the Secretary of Defense before it can be handed over to the President, who is the final approval authority for the MOH, although it is awarded in the name of Congress.

The Secretary of Defense, with the concurrence of the Secretary of State, is the approval authority for the acceptance and wear of NATO medals issued by the Secretary General of NATO and offered to the U.S. Permanent Representative to NATO in recognition of U.S. Service members who meet the eligibility criteria specified by NATO.[26]

Congressional committees

As the head of the department, the Secretary of Defense is the chief witness for the congressional committees with oversight responsibilities over the Department of Defense. The most important committees, with respect to the entire department, are the two authorizing committees, the Senate Armed Services Committee (SASC) and the House Armed Services Committee (HASC), and the two appropriations committees, the Senate Appropriations Committee and the House Appropriations Committee.

For the DoD intelligence programs the Senate Select Committee on Intelligence and the House Permanent Select Committee on Intelligence have the principal oversight role.

National Security Council

The Secretary of Defense is a statutory member of the National Security Council.[27] As one of the principals, the Secretary along with the Vice President, Secretary of State and the Assistant to the President for National Security Affairs participates in biweekly Principals Committee (PC) meetings, preparing and coordinating issues before they are brought before full NSC sessions chaired by the President.

Role in the military justice system

The Secretary is one of only five or six civilians—the others being the President, the three "service secretaries" (the Secretary of the Army, Secretary of the Navy, and Secretary of the Air Force), and the Secretary of Homeland Security (when the United States Coast Guard is under the United States Department of Homeland Security and has not been transferred to the Department of the Navy under the Department of Defense)—authorized to act as convening authority in the military justice system for General Courts-Martial (10 U.S.C. § 822: article 22, UCMJ), Special Courts-Martial (10 U.S.C. § 823: article 23, UCMJ), and Summary Courts-Martial (10 U.S.C. § 824: article 24 UCMJ).

Amenities

Salary

Secretary of Defense is a Level I position of the Executive Schedule,[4] and thus earns a salary of $203,700 per year as of January 2015.

List of Secretaries of Defense

The longest-serving Secretary of Defense is Robert McNamara, who served for a total of 2,595 days. Combining his two non-sequential services as Secretary of Defense, the second longest serving is Donald Rumsfeld, who served just ten days fewer than McNamara. The shortest-serving Secretary of Defense is Elliot Richardson, who was quickly moved to US Attorney General after 114 days due to resignations during the Watergate Scandal (not counting Deputy Secretary of Defense William P. Clements and William Howard Taft IV, who each served a few weeks as temporary/acting Secretary of Defense).

Parties

  Democratic   Republican   Political Independent / Unknown

Status
  Denotes an Acting Secretary of Defense
No. Portrait Name State of Residence Took Office Left Office Days served President
serving under
1 James V. Forrestal New York September 17, 1947 March 28, 1949[28] 558 Harry S Truman
2 Louis A. Johnson West Virginia March 28, 1949 September 19, 1950[29] 540
3 George C. Marshall Pennsylvania September 21, 1950 September 12, 1951[30] 356
4 Robert A. Lovett New York September 17, 1951 January 20, 1953[31] 491
5 Charles E. Wilson Michigan January 28, 1953 October 8, 1957[32] 1714 Dwight D. Eisenhower
6 Neil H. McElroy Ohio October 9, 1957 December 1, 1959[33] 783
7 Thomas S. Gates, Jr. Pennsylvania December 2, 1959 January 20, 1961[34] 415
8 Robert S. McNamara Michigan January 21, 1961 February 29, 1968[35] 1035 John F. Kennedy
1560
(2595 total)
Lyndon B. Johnson
9 Clark M. Clifford Maryland March 1, 1968 January 20, 1969[36] 325
10 Melvin R. Laird Wisconsin January 22, 1969 January 29, 1973[37] 1468 Richard Nixon
11 Elliot L. Richardson Massachusetts January 30, 1973 May 24, 1973[38] 114
William P. Clements, Jr.[39]
Acting
Texas May 24, 1973 July 2, 1973 39
12 James R. Schlesinger Virginia July 2, 1973 November 19, 1975[40] 403
467
(870 total)
Gerald Ford
13 Donald Rumsfeld Illinois November 20, 1975 January 20, 1977[41] 427
14 Harold Brown California January 21, 1977 January 20, 1981[42] 1460 Jimmy Carter
15 Caspar Weinberger California January 21, 1981 November 23, 1987[43] 2497 Ronald Reagan
16 Frank Carlucci Virginia November 23, 1987 January 20, 1989[44] 424
William Howard Taft IV
Acting
Ohio January 20, 1989 March 21, 1989[45] 60 George H. W. Bush
17 Richard B. Cheney Wyoming March 21, 1989 January 20, 1993[46] 1401
18 Leslie Aspin Wisconsin January 21, 1993 February 3, 1994[47] 378 Bill Clinton
19 William J. Perry Pennsylvania February 3, 1994 January 23, 1997[48] / January 24, 1997[49] 1085
20 William S. Cohen Maine January 24, 1997 January 20, 2001[50] 1457
21 Donald Rumsfeld Illinois January 20, 2001 December 18, 2006[51] 2158 George W. Bush
22 Robert M. Gates Texas December 18, 2006 June 30, 2011[52] 764
891
(1,655 total)
Barack Obama
23 Leon Panetta California July 1, 2011 February 26, 2013[53] 606
24 Chuck Hagel Nebraska February 27, 2013 February 17, 2015[54] 720
25 Ash Carter Massachusetts February 17, 2015 January 19, 2017[55] 702
26 James Mattis Washington January 20, 2017[56] Present 218 Donald Trump

Succession

Presidential succession

The Secretary of Defense is sixth in the presidential line of succession, following the Secretary of the Treasury and preceding the Attorney General.[57]

Secretary of Defense succession

In Executive Order 13533 of March 1, 2010, President Barack Obama modified the line of succession regarding who would act as Secretary of Defense in the event of a vacancy or incapacitation, thus reversing the changes made by President George W. Bush in Executive Order 13394 as to the relative positions of the Secretaries of the Military Departments. All of the officials in the line of succession are civilians appointed by the President with the advice and consent of the Senate:

Executive Order 13533 (March 1, 2010 – present)

# Office
Secretary of Defense
1 Deputy Secretary of Defense
2 Secretary of the Army
3 Secretary of the Navy
4 Secretary of the Air Force
5 Under Secretary of Defense for Acquisition, Technology, and Logistics
6 Under Secretary of Defense for Policy
7 Under Secretary of Defense (Comptroller)
8 Under Secretary of Defense for Personnel and Readiness
9 Under Secretary of Defense for Intelligence
10 Deputy Chief Management Officer of the Department of Defense
11 Principal Deputy Under Secretary of Defense for Acquisition, Technology, and Logistics
12 Principal Deputy Under Secretary of Defense for Policy
13 Principal Deputy Under Secretary of Defense (Comptroller)
14 Principal Deputy Under Secretary of Defense for Personnel and Readiness
15 Principal Deputy Under Secretary of Defense for Intelligence
16 Director of Defense Research and Engineering
17 General Counsel of the Department of Defense
Assistant Secretaries of Defense
Assistant to the Secretary of Defense for Nuclear and Chemical and Biological Defense Programs
Director of Operational Test and Evaluation
Director of Operational Energy Plans and Programs
and the Director of Cost Assessment and Program Evaluation
18 Under Secretary of the Army
Under Secretary of the Navy
and the Under Secretary of the Air Force
19 Assistant Secretaries of the Army
Assistant Secretaries of the Navy
Assistant Secretaries of the Air Force
General Counsel of the Army
General Counsel of the Navy
and the General Counsel of the Air Force

Executive Order 13394 (December 22, 2005 – March 1, 2010)

# Office
Secretary of Defense
1 Deputy Secretary of Defense
2 Under Secretary of Defense for Intelligence
3 Under Secretary of Defense for Policy
4 Under Secretary of Defense for Acquisition, Technology, and Logistics
5 Secretary of the Army
6 Secretary of the Air Force
7 Secretary of the Navy
8 Under Secretary of Defense for Personnel and Readiness
and the Under Secretary of Defense (Comptroller)
9 Deputy Under Secretary of Defense for Acquisition and Technology
Deputy Under Secretary of Defense for Policy
and the Deputy Under Secretary of Defense for Personnel and Readiness
10 General Counsel of the Department of Defense
Assistant Secretaries of Defense
and the Director of Operational Test and Evaluation
11 Deputy Under Secretary of Defense for Logistics and Material Readiness
and the Director of Defense Research and Engineering
12 Under Secretary of the Army
Under Secretary of the Navy
and the Under Secretary of the Air Force
13 Assistant Secretaries of the Army
Assistant Secretaries of the Navy
Assistant Secretaries of the Air Force
General Counsel of the Army
General Counsel of the Navy
and the General Counsel of the Air Force

Living former Secretaries of Defense

As of January 2017, there are ten living former Secretaries of Defense, the oldest being Harold Brown (1977–1981, born 1927). The most recent Secretary of Defense to die was Melvin Laird (1969–1973), on November 16, 2016.

Name Term of office Date of birth (and age)
Donald Rumsfeld 1975–1977, 2001–2006 July 9, 1932
Harold Brown 1977–1981 September 19, 1927
Frank Carlucci 1987–1989 October 18, 1930
Dick Cheney 1989–1993 January 30, 1941
William Perry 1994–1997 October 11, 1927
William Cohen 1997–2001 August 28, 1940
Robert Gates 2006–2011 September 25, 1943
Leon Panetta 2011–2013 June 28, 1938
Chuck Hagel 2013–2015 October 4, 1946
Ash Carter 2015–2017 September 24, 1954 (age 62)

See also

References

Footnotes

  1. Trask & Goldberg: p. 177.
  2. http://www.tioh.hqda.pentagon.mil/UniformedServices/Flags/Pos_Colors_DoD.aspx, accessed on 2012-01-04.
  3. "3 U.S. Code § 19 - Vacancy in offices of both President and Vice President; officers eligible to act".
  4. 1 2 5 U.S.C. § 5312.
  5. 10 U.S.C. § 113.
  6. DoDD 5100.1: Enclosure 2: a
  7. 5 U.S.C. § 101.
  8. Trask & Goldberg: p.11
  9. http://www.nato.int/cps/en/SID-C0FDE451-36F2483B/natolive/nato_countries.htm, accessed on 2012-01-04.
  10. 50 U.S.C. § 402.
  11. 10 U.S.C. § 113
  12. The National Security Act of 1947 originally required an interval of ten years after relief from active duty, which was reduced to seven years by Sec. 903(a) of the 2008 National Defense Authorization Act. In 1950 Congress passed special legislation (Pub. Law 81-788) to allow George C. Marshall to serve as Secretary of Defense while remaining a commissioned officer on the active list of the Army (Army regulations kept all five-star generals on active duty for life), but warned:
    It is hereby expressed as the intent of the Congress that the authority granted by this Act is not to be construed as approval by the Congress of continuing appointments of military men to the office of Secretary of Defense in the future. It is hereby expressed as the sense of the Congress that after General Marshall leaves the office of Secretary of Defense, no additional appointments of military men to that office shall be approved.
    See Defenselink bio, retrieved 8/2/2010; and Marshall Foundation bio, retrieved 8/2/2010.
  13. 1 2 10 U.S.C. § 162
  14. Joint Publication 1: II-9, II-10 & II-11.
  15. 10 U.S.C. § 3011
  16. 10 U.S.C. § 5011
  17. 10 U.S.C. § 8011
  18. Trask & Goldberg: pp.11 & 52
  19. Cohen: p.231.
  20. http://www.americanprogress.org/issues/2006/10/rumsfeld.html, accessed on 2012-01-06.
  21. 10 U.S.C. § 152
  22. Cabinets and Counselors: The President and the Executive Branch (1997). Congressional Quarterly. p. 87.
  23. "Senate confirms retired Gen. James Mattis as defense secretary, breaking with decades of precedent". The Washington Post. January 20, 2017.
  24. Department of Defense Directive 5100.01 Functions of the Department of Defense and Its Major Components
  25. DoDD 5100.1: p.1.
  26. DoDM 1348.33, Vol 3: p.39 (Enclosure 3)
  27. 50 U.S.C. § 402
  28. "James V. Forrestal - Harry S. Truman Administration". Office of the Secretary of Defense - Historical Office.
  29. "Louis A. Johnson - Harry S. Truman Administration". Office of the Secretary of Defense - Historical Office.
  30. "George C. Marshall - Harry S. Truman Administration". Office of the Secretary of Defense - Historical Office.
  31. "Robert A. Lovett - Harry S. Truman Administration". Office of the Secretary of Defense - Historical Office.
  32. "Charles E. Wilson - Dwight D. Eisenhower Administration". Office of the Secretary of Defense - Historical Office.
  33. "Neil H. McElroy -Dwight D. Eisenhower Administration". Office of the Secretary of Defense - Historical Office.
  34. "Thomas S. Gates, Jr. - Dwight D. Eisenhower Administration". Office of the Secretary of Defense - Historical Office.
  35. "Robert S. McNamara - John F. Kennedy / Lyndon Johnson Administration". Office of the Secretary of Defense - Historical Office.
  36. "Clark M. Gifford - Lyndon Johnson Administration". Office of the Secretary of Defense - Historical Office.
  37. "Melvin R. Laird - Richard Nixon Administration". Office of the Secretary of Defense - Historical Office.
  38. "Elliot L. Richardson - Richard Nixon Administration". Office of the Secretary of Defense - Historical Office.
  39. Cantwell, Gerald T. Citizen Airmen: A History of the Air Force Reserve 1946–1994. DIANE Publishing. p. 252. In June 1973, Representative O. C. Fisher complained to William P. Clements, Jr., acting Secretary of Defense, that the authority, responsibility, and, consequently, effectiveness of the chiefs of the various reserve components seemed to be eroding.
  40. "James R. Schlesinger - Richard Nixon / Gerald Ford Administration". Office of the Secretary of Defense - Historical Office.
  41. "Donald H. Rumsfeld - Gerald Ford Administration". Office of the Secretary of Defense - Historical Office.
  42. "Harold Brown - James Carter Administration". Office of the Secretary of Defense - Historical Office.
  43. "Caspar W. Weinberger - Ronald Reagan Administration". Office of the Secretary of Defense - Historical Office.
  44. "Frank C. Carlucci - Ronald Reagan Administration". Office of the Secretary of Defense - Historical Office.
  45. "II. Secretaries of Defense" (PDF). Washington Headquarters Services - Pentagon Digital Library. p. 9. (Deputy Secretary of Defense William H. Taft served as acting secretary of defense from 20 January 1989 until 21 March 1989).
  46. "Richard B. Cheney - George H.W. Bush Administration". Office of the Secretary of Defense - Historical Office.
  47. "Leslie Aspin - William J. Clinton Administration". Office of the Secretary of Defense - Historical Office.
  48. "William J. Perry - William J. Clinton Administration". Office of the Secretary of Defense - Historical Office.
  49. "II. Secretaries of Defense" (PDF). Washington Headquarters Services - Pentagon Digital Library. p. 10. Sworn in as secretary of defense on 3 February 1994 and served until 24 January 1997.
  50. "William S. Cohen - William J. Clinton Administration". Office of the Secretary of Defense - Historical Office.
  51. "Donald H. Rumsfeld - George W. Bush Administration". Office of the Secretary of Defense - Historical Office.
  52. "Robert M. Gates - George W. Bush / Barack Obama Administration". Office of the Secretary of Defense - Historical Office.
  53. "Leon E. Panetta - Barack Obama Administration". Office of the Secretary of Defense - Historical Office.
  54. "Chuck Hagel - Barack Obama Administration". Office of the Secretary of Defense - Historical Office.
  55. "Ashton B. Carter - Barack Obama Administration". Office of the Secretary of Defense - Historical Office.
  56. "James N. Mattis - Donald Trump Administration". Office of the Secretary of Defense - Historical Office.
  57. 3 U.S.C. § 19.

Sources

Federal law

Directives, regulations and manuals

Further reading

Primary historical sources

Online sources

Current U.S. order of precedence (ceremonial)
Preceded by
Steve Mnuchin
as Secretary of the Treasury
Order of Precedence of the United States
as Secretary of the Treasury
Succeeded by
Jeff Sessions
as Attorney General
Current U.S. presidential line of succession
Preceded by
Secretary of the Treasury
Steve Mnuchin
6th in line Succeeded by
Attorney General
Jeff Sessions
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