The More Important FourthJust so we don't forget as Congress guts it in the FISA bill, here's the Fourth Amendment:
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.
Got that? Ya gotta have a warrant. No kings. A country ruled by law.