186 Thus, observers seem to agree that while the Constitution gives the president the power to enter into single executive agreements, the president can also unilaterally denounce those agreements.187 The same principle would apply to political commitments: to the extent that the president is empowered to make non-binding commitments without the consent of the Senate or Congress, the President may also unilaterally withdraw from these obligations. .188 See z.B. Garamendi, 539 U.S., 415 (discussion of the “executive agreements to settle the rights of U.S. nationals against foreign governments” of “as early as 1799”); Law of 20 February 1792, § 26, 1 Stat. 239 (Law of the Second Congress authorizing postal executive agreements). Initially, most judges and scholars consider that executive agreements based exclusively on the power of the president have not become the “law of the land” under the supremacy clause, because such agreements are not “treaties” ratified by the Senate.490 The Supreme Court has, however, found another basis for anticipating state laws through executive agreements. Ultimately, the transfer of the power of external relations through the Constitution to the national government. . . .