Health care rationing refers to mechanisms that are used to allocate health care resources. [1] Countries differ upon the mechanisms that are used to ration the distribution of health care.[2] Some in U.S. politics, use "health care rationing" as a pejorative phrase to oppose reform. Uwe Reinhardt, an economics professor at Princeton University says that these critics seem to believe that rationing is something that only governments do. He notes American health care has always been rationed on the basis of price and affordability and that private insurers also ration by price when the demand a co-pay. He says that the health reforms espoused by President Obama and others in Congress aim to reduce rationing on the basis of price and ability to pay and not to increase it.[1]