The framers of the constitution understood the corrupting influence of power and did everything they could to guard against it. It doesn't matter whose "team" you're on. Can you imagine the howling that would be going on if it were Janet Reno who was claiming the right to wiretap without oversight?
(Actually we don't need to imagine it, we can remember it.) Anyone remember the "clipper chip"?
This battle is of crucial impoortance because whatever the result, it will affect the stucture of power in this country for decades to come.