The President ratifies treaties after receiving the "advice and consent" of 2/3 of the Senate (not the full Congress).
It is a common misunderstanding that the Senate ratifies treaties.
The president can make treaties, but Congress must ratify them.
The legislative branch is responsible for the approval and ratification of treaties.
The Legislative Branch
The president can make treaties, but Congress must ratify them.
In the United States, the President ratifies treaties after 2/3 of the Senate has given "advice and consent." It is a common misunderstanding that the Senate ratifies treaties.
The Senate ratifies treaties entered into by the executive branch of government.
The Executive Branch makes the Treaty, this branch includes the President, the US Senate ratifies the Treaty by a two thirds majority. Only then is it effective.
Senate
In the United States the legislative branch of government, Congress, ratifies laws.
The Senate ratifies treaties and all of the president's nominees as part of the separation of powers/ checks and balances that are built into the US Constitution.
The senate ratifies treaties with a two third majority.
He can and does meet with foreign heads of state and negotiate treaties and other accords or agreements. However, any treaties he makes are not binding unless the Senate ratifies them.