who must approve any treaties that are made with foreign countries
Treaty Clause The Treaty Clause is part of Article II, Section 2, Clause 2, of the United States Constitution, that empowers the President of the United States to propose and chiefly negotiate agreements between the United States and other countries, which, upon receiving the advice and consent of a two-thirds supermajority vote of the United States Senate, become treaties under international law.
Foreign official any officer or employee of a foreign government or any department, agency, or instrumentality thereof, or of a public international organization, or any person acting in an official capacity for or on behalf of any such government or department, agency, or instrumentality, or for or on behalf of any such public international organization.