An executive agreement is an agreement between the United States and a foreign government that is less formal than a treaty and is not subject to the constitutional requirement that two-thirds of the U.S. Senate be ratified. Many such agreements were issued by U.S. President Woodrow Wilson in the run-up to World War I, leading to their increased use. Since the 1940s, most international agreements have been signed by presidents in the form of executive agreements rather than treaties. However, many say they do not represent the will of the governed; In Wilson`s case, they could have pushed the United States into World War I. In the United States, executive agreements are binding at the international level when negotiated and concluded under the authority of the President on foreign policy, as commander-in-chief of the armed forces or from a previous congressional record. For example, the President, as Commander-in-Chief, negotiates and concludes Armed Forces Agreements (SOFAs) that govern the treatment and disposition of U.S. forces deployed in other nations. However, the President cannot unilaterally enter into executive agreements on matters that are not in his constitutional jurisdiction. In such cases, an agreement should take the form of an agreement between Congress and the executive branch or a contract with the Council and the approval of the Senate.  Britannica.com: Encyclopedia Article on the Executive Agreement In the United States, executive agreements are concluded exclusively by the President of the United States. They are one of three mechanisms through which the United States makes binding international commitments.
Some authors view executive agreements as treaties of international law because they bind both the United States and another sovereign state. However, under U.S. constitutional law, executive agreements are not considered treaties within the meaning of the contractual clause of the U.S. Constitution, which requires the Council and the approval of two-thirds of the Senate to be considered a treaty. The U.S. Constitution does not explicitly give a president the power to enter into executive agreements. However, it may be authorized to do so by Congress or may do so on the basis of its foreign relations management authority. Despite questions about the constitutionality of executive agreements, the Supreme Court ruled in 1937 that they had the same force as treaties. As executive agreements are made on the authority of the president-in-office, they do not necessarily bind his successors. Executive agreements are often used to circumvent the requirements of national constitutions for treaty ratification. Many nations that are republics with written constitutions have constitutional rules on treaty ratification.
The Organization for Security and Cooperation in Europe is based on executive agreements. Second, while it is widely accepted that, under the “executive power” clause, the president has the power to enter into exclusive executive agreements that are not inconsistent with legislation in areas where the primary responsibility lies with Congress, the question arises as to whether the President alone can enter into an agreement incompatible with an act of Congress or whether a single executive agreement may succeed previous laws of Congress. The prevailing idea, which is rooted in the assumption that it would be unacceptable for an act of one person – the president – to cancel an act of Congress, is that the only executive agreements in the United States are ineffective, insofar as they conflict with an earlier act of Congress in an area of congressional jurisdiction. This is the position of a federal appels court in the United States against Guy W. Capps, Inc. (4th Circuit, 1953) and by the American Law Institute.