Who has the power to approve treaties?

The power to approve treaties is vested in the Senate as outlined in the United States Constitution. Article II, Section 2 specifically states that the President can make treaties, provided that two-thirds of the Senators present concur. This requirement is designed to ensure that a treaty, which represents the foreign policy of the nation, has broad support and is not solely dependent on the executive branch's decisions.

In contrast, the House of Representatives does not play a direct role in treaty approval, as its domain primarily involves initiating revenue-related legislation and other congressional functions. The President can negotiate treaties but must seek the Senate's approval to finalize them. The Supreme Court, while it interprets disputes regarding treaties and other legal matters, does not have a role in the treaty approval process. Thus, the Senate’s authority to approve treaties reflects its constitutional responsibility in foreign affairs.