In the United States, a treaty negotiated by the President must be approved by the Senate to become law. According to Article II, Section 2 of the U.S. Constitution, the President has the power to make treaties, but those treaties must be ratified by a two-thirds majority in the Senate.
Here is the relevant text from the Constitution:
- Article II, Section 2, Clause 2: "He shall have Power, by and with the Advice and Consent of the Senate, to make Treaties, provided two thirds of the Senators present concur..."
Therefore, the correct response is:
after it is approved by the Senate.