The Senate has influence in the area of foreign policy through its power to approve treaties.
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The Senate must approve treaties and presidential appointments.
In the United States such power rests with the Senate.
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The Legislative Branch can ratify treaties; The Senate approves Presidential Appointments
The Senate has the power to approve treaties. It is able to approve presidential appointments such ambassadors. The Senate also has the power of filibuster and cloture.
Treaties made by the United States with a foreign power must be ratified by Congress.
It is President.
advice and consent
The Senate has the responsibility of approving treaties.
The Constitution requires the Senate to ratify treaties. Until the Senate approves them, they are not in force. The Senate does not automatically approve all treaties that the President sends to them.