Seeing as how only those who are guilty will only be the ones in trouble here, it doesn't bother me too much.
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.
I do think it violates that however. We certainly must be careful. A police state does not happen all at once you know. Freedoms are slowly chipped away until one day you wake up and say "Holy shxt!?" Keeping our firearms IS A MUST.
I sort of have mixed emotions on this. On one hand, they are using it to stop people we are at war with. On the other, it does seem to be a violation of an amendment.