what kinds of treaties can the president make
Treaty Clause The body of law governing U.S. foreign policy recognizes three mechanisms by which the United States enters into binding international obligations. The term "treaty" is used in a more restricted legal sense than in international law. U.S. law distinguishes what it calls treaties from congressional-executive agreements and executive agreements.[1] All three classes are considered treaties under international law; they are distinct only from the perspective of internal United States law. Distinctions among the three concern their method of ratification: by two-thirds of the Senate, by normal legislative process, or by the President alone, respectively. The Treaty Clause empowers the President to make or enter into treaties with the "advice and consent" of two-thirds of the Senate. In contrast, normal legislation becomes law after approval by simple majorities in both the Senate and the House of Representatives and the signature of the President.
Treaty Clause Additionally, an international accord that is inconsistent with the U.S. Constitution is void under domestic U.S. law, the same as any other federal law in conflict with the Constitution. This principle was most clearly established in the case of Reid v. Covert.[9] The Supreme Court could rule an Article II treaty provision to be unconstitutional and void under domestic law, although it has not yet done so.