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The Legislative Branch
The Senate ratifies treaties entered into by the executive branch of government.
The executive branch is responsible for decisions on foreign treaties.
The executive branch of the U.S. government has the power to negotiate treaties with foreign nations. Specifically, the President negotiates treaties, but they must be ratified by a two-thirds majority in the Senate to become legally binding. This system ensures a check on the President's power by requiring Senate approval for international agreements.
Executive Branch :)
The only branch of the United States Federal Government that can enter into treaties with other sovereign nations is the legislative branch.
legislative
The Legislative branch has the power to make treaties according to the Constitution, but many Presidents use a loophole to bypass the need for legislative approval and make foreign policy with the executives of other nations called "Executive Agreements". These agreements are essentially the same as treaties.
Congress
the legislative branch confirms judges
Only the President can propose treaties with other countries for the US. This power is speciically given to the president in Article II, Section 2, Clause 2: "He shall have Power, by and with the advice and consent of the Senate, to make treaties. . ." No other branch of government and no state may deal with foreign nations.
In the United States, the Executive branch provides the process for signing and approving treaties with foreign entities (generally the responsibility of the President).However, the Legislative branch (specifically the Senate) is responsible for ratifying any treaty signed by the President. A two-thirds majority in the Senate must approve the treaty in question for it to be officially ratified.