The only body with the authority to ratify treaties and confirm presidential appointments is the Senate. However, there are two exceptions to this rule: any treaty involving international trade and the approval of Vice President nominees by the House.
Impeachment trials must be conducted by the Senate alone, which acts as both jury and judge. Three presidents and 20 other federal officials have been tried by the Senate since 1789. Since 1792, the Congress has looked into corruption in the executive branch and other areas of American society.
There are situations when the Senate's jurisdiction exceeds that of the President or the House of Representatives. Impeachment proceedings before the Senate have the power to remove the President for misbehavior.
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