The president of the United States (POTUS) is the head of state and head of government of the United States. The president directs the executive branch of the federal government and is the commander-in-chief of the United States Armed Forces.
Article Two of the United States Constitution establishes the executive branch of the federal government, which carries out and enforces federal laws. Article Two vests the power of the executive branch in the office of the president of the United States, lays out the procedures for electing and removing the president, and establishes the president's powers and responsibilities.
The War Powers Resolution is a federal law intended to check the U.S. president's power to commit the United States to an armed conflict without the consent of the U.S. Congress. The resolution was adopted in the form of a United States congressional joint resolution. It provides that the president can send the U.S. Armed Forces into action abroad only by declaration of war by Congress, "statutory authorization", or in case of "a national emergency created by attack upon the United States, its territories or possessions, or its armed forces".
In the United States, an executive order is a directive by the president of the United States that manages operations of the federal government. The legal or constitutional basis for executive orders has multiple sources. Article Two of the United States Constitution gives presidents broad executive and enforcement authority to use their discretion to determine how to enforce the law or to otherwise manage the resources and staff of the executive branch. The ability to make such orders is also based on expressed or implied Acts of Congress that delegate to the president some degree of discretionary power. The vast majority of executive orders are proposed by federal agencies before being issued by the president.
Imperial presidency is a term applied to the modern presidency of the United States. It became popular in the 1960s and served as the title of a 1973 book by historian Arthur M. Schlesinger, Jr., who wrote The Imperial Presidency to address two concerns: that the presidency was uncontrollable and that it had exceeded its constitutional limits. According to professor of political science Thomas E. Cronin, author of The State of the Presidency, the imperial presidency is a term used to define a danger to the American constitutional system by allowing presidents to create and abuse presidential prerogatives during national emergencies. This was based on: (1) presidential war powers vaguely defined in the Constitution, and (2) secrecy – a system used that shielded the Presidency from the usual checks and balances afforded by the legislative and judicial branches.
The Trading with the Enemy Act (TWEA) of 1917 is a United States federal law, enacted on October 6, 1917, in response to, and precisely 6 months after the United States declaration of war on Germany on April 6, 1917. It continues to give the President of the United States the power to oversee or restrict any and all trade between the United States and its enemies in times of war. TWEA was amended in 1933 by the Emergency Banking Act to extend the president’s authority also in peace time. It was amended again in 1977 by the International Emergency Economic Powers Act (IEEPA) to restrict again the application of TWEA only to times of war, while the IEEPA was intended to be used in peace time.
A state of emergency is a situation in which a government is empowered to put through policies that it would normally not be permitted to do, for the safety and protection of its citizens. A government can declare such a state during a natural disaster, civil unrest, armed conflict, medical pandemic or epidemic or other biosecurity risk.
A declaration of war is a formal declaration issued by a national government indicating that a state of war exists between that nation and another. A document by the Federation of American Scientists gives an extensive listing and summary of statutes which are automatically engaged upon the United States declaring war.
Separation of powers is a political doctrine originating in the writings of Charles de Secondat, Baron de Montesquieu in The Spirit of the Laws, in which he argued for a constitutional government with three separate branches, each of which would have defined abilities to check the powers of the others. This philosophy heavily influenced the drafting of the United States Constitution, according to which the Legislative, Executive, and Judicial branches of the United States government are kept distinct in order to prevent abuse of power. The American form of separation of powers is associated with a system of checks and balances.
Youngstown Sheet & Tube Co. v. Sawyer, 343 U.S. 579 (1952), also commonly referred to as the Steel Seizure Case or the Youngstown Steel case, was a landmark United States Supreme Court decision that limited the power of the President of the United States to seize private property. The case served as a check on the most far-reaching claims of executive power at the time and signaled the Court's increased willingness to intervene in political questions.
Executive Order 12170 was issued by American president Jimmy Carter on November 14, 1979, ten days after the Iran hostage crisis had started. The executive order, empowered under the International Emergency Economic Powers Act, ordered the freezing of all Iranian government assets held within the United States.
The powers of the president of the United States include those explicitly granted by Article II of the United States Constitution as well as those granted by Acts of Congress, implied powers, and also a great deal of soft power that is attached to the presidency.
The International Emergency Economic Powers Act (IEEPA), Title II of Pub. L.Tooltip Public Law 95–223, 91 Stat. 1626, enacted October 28, 1977, is a United States federal law authorizing the president to regulate international commerce after declaring a national emergency in response to any unusual and extraordinary threat to the United States which has its source in whole or substantial part outside the United States. The act was signed by President Jimmy Carter on December 28, 1977.
The National Emergencies Act (NEA) is a United States federal law passed to end all previous national emergencies and to formalize the emergency powers of the President.
The Science Advisor to the President is an individual charged with providing advisory opinions and analysis on science and technology matters to the President of the United States. The first Science Advisor, Vannevar Bush, chairman of the Office of Scientific Research and Development, served Presidents Franklin Delano Roosevelt and Harry S. Truman from 1941 to 1951. President Truman created the President's Science Advisory Committee in 1951, establishing the chairman of this committee as the President's Science Advisor. This committee continued under Presidents Dwight D. Eisenhower, John F. Kennedy, Lyndon B. Johnson, and Richard M. Nixon until 1973. Nixon terminated the committee rather than appointing a replacement for his advisor who had resigned. The US Congress established the Office of Science and Technology Policy in 1976, re-establishing Presidential Science Advisors to the present day.
The Office of Defense Mobilization (ODM) was an independent agency of the United States government whose function was to plan, coordinate, direct and control all wartime mobilization activities of the federal government, including manpower, economic stabilization, and transport operations. It was established in 1950, and for three years was one of the most powerful agencies in the federal government. It merged with other agencies in 1958 to become the Office of Civil and Defense Mobilization (1958–1961).
Powers of the United States Congress are implemented by the United States Constitution, defined by rulings of the Supreme Court, and by its own efforts and by other factors such as history and custom. It is the chief legislative body of the United States. Some powers are explicitly defined by the Constitution and are called enumerated powers; others have been assumed to exist and are called implied powers.
The presidency of Harry S. Truman began on April 12, 1945, when Harry S. Truman became the 33rd president upon the death of Franklin D. Roosevelt, and ended on January 20, 1953.
