Article VI
This Constitution, and the laws of the United States which shall be made in pursuance thereof...
...shall be the supreme law of the land....Amendment IV
The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated, and no warrants shall issue, but upon probable cause, supported by oath or affirmation, and particularly describing the place to be searched, and the persons or things to be seized."Certainly, all those who have framed written constitutions contemplate them as forming the fundamental and paramount law of the nation, and, consequently, the theory of every such government must be, that an act of the legislature [Congress] repugnant to the Constitution is void."
Marbury v Madison, 1803
You of course took note that 50 USC 1802 spcifically excludes "United States persons" (citizens and permanent residents) from warrantless surveillance.
Ya think every Mohammad, Akbar, and Sami that sets foot on U.S. soil with a student or tourist visa is "the people" of the U.S. Constitution?