The Insanity Defense Reform Act of 1984 was a law passed in the wake of public outrage after John Hinckley, Jr.'s acquittal for the Reagan assassination attempt. It amended the United States federal laws governing defendants with mental diseases or defects to make it significantly more difficult to obtain a verdict of not guilty only by reason of insanity. It was criticized by psychologist Lawrence Z. Freedman for being ineffective: "If the attacker is rational mentally, stable emotionally, and fanatic politically, he will not be deterred. Nor will an irrational, affectively disturbed individual be deterred."[1]