All government officers of the United States, including the President, the Justices of the Supreme Court, state judges and legislators, and all members of Congress, pledge first and foremost to uphold the Constitution. These oaths affirm that the rule of law is superior to the rule of any human leader. At the same time, the federal government has considerable discretion: the legislative branch is free to decide what statutes it will write, as long as it stays within its enumerated powers and respects the constitutionally protected rights of individuals. Likewise, the judicial branch has a degree of judicial discretion, and the executive branch also has various discretionary powers including prosecutorial discretion.
What do the President and Supreme Court justices vow to uphold?
the Constitution