The President of the United States is acting as what when he meets the leader of France to negotiate a treaty.

The Constitution provides that the president "shall have Power, by and with the Advice and Consent of the Senate, to make Treaties, provided two-thirds of the Senators present concur" (Article II, section 2). The Constitution's framers gave the Senate a share of the treaty power in order to give the president the benefit of the Senate's advice and counsel, check presidential power, and safeguard the sovereignty of the states by giving each state an equal vote in the treaty-making process. As Alexander Hamilton explained in The Federalist, No. 75, "The operation of treaties as laws, plead strongly for the participation of the whole or a portion of the legislative body in the office of making them." The constitutional requirement that the Senate approve a treaty with a two-thirds vote means that successful treaties must gain support that overcomes partisan division. The two-thirds requirement adds to the burdens of the Senate leadership and may also encourage opponents of a treaty to engage in a variety of dilatory tactics in hopes of obtaining sufficient votes to ensure its defeat.

Explanation: yup