Upon becoming President of the United States, George Washington almost immediately set two critical foreign policy precedents: He assumed control of treaty negotiations with a hostile power—in this case, the Creek Nation of Native Americans—and then asked for congressional approval once they were finalized. In addition, he sent American emissaries overseas for negotiations without legislative approval
Answer: The Constitution has been changed by basic legislation by Congress, actions taken by the President, key decisions of the Supreme Court, the activities of political parties, and ect.