What is one role that the president has in regard to foreign nations? what is the role of the senate in this?

The president has the power to nominate ambassadors and appointments are made with the advice and consent of the Senate. The State Department formulates and implements the president's foreign policy. Country Reports on Human Rights Practices are submitted each year to the Senate Committee on Foreign Relations. Presidents nominate diplomats and negotiate treaties, but the Senate determines whether those nominees will serve or if those treaties will be ratified.

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