They must meet with the other countries, work out the details and agree to it, finalize the treaty into a bill of sorts, and the Senate must confirm it with a vote of 2/3. Pretty cut-and-dry.
The Legislative branch has the power to make treaties according to the Constitution, but many Presidents use a loophole to bypass the need for legislative approval and make foreign policy with the...
Article II, Section 2 of the U.S. Constitution provides that the President may make treaties subject to ratification by 2/3rds of the Senate and that the President shall appoint ambassadors, judges,...