The question you should be asking yourself is "Should (Hillary Clinton/Ted Kennedy/Democratic boogeyman of the day) have unrestricted powers to break any American law they choose? How about if they decided the 2nd ammendment should be ignored and took away your guns? What if they decided that all Republicans should be wiretapped (this smells a little reverse Nixon-ish)?"
Bring the hearings on. I have yet to hear a single non-partisan expert defend the 'legality' of these wiretaps. The only people defending the program are Gonzales, Bush, Cheney, etc. within the administration and partisans hacks tweeting out the GOP approved talking points.