In this, we can see how punctiliously the government does what it needs within Constitutional limits on its power. The Fourth Amendment reads:
- 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.
Well, peoples' papers and effects aren't being seized --- just copies of these things that other people might happen to have. So, no problem there. But even if you think there was one, and you're troubled by the lack of probable cause, or specificity in describing the places or things to be seized, be of good cheer. The Constition says "no Warrants shall issue", and these aren't warrants. They're National Security Letters. So of course, that's different.
Who knew that living within constitutional restraints on your power could be this easy?