Treaties are formal written agreements between countries. United States treaties are ratified by the president but require a two-thirds approval vote from the Senate. Executive agreements are similar to treaties and are made by the president but do not require the advice and consent of the Senate. Bilateral treaties involve two countries, while multilateral treaties involve three or more.
This research guide focuses on agreements between nations. If you are looking for the text of statutes for foreign countries, try the Foreign Law Guide, the online version of Foreign Law: Current Sources of Codes and Legislation (Reference K38 .R49 1989).