As debates and arguments always do, this one wanders a bit, passing over, under, around and through the question of just whom is being wiretapped, etc. The discussion of limiting executive power seems on hinge on who are the subjects of domestic spying, and how numerous they are.
Many Americans buy the domestic spying because they believe it's limited to a small number fo people, and to people most of don't like that much in the first place -- guys with beards and funny hats. They believe this because the president tells thems so. But in cases where the true extent of domestic spying programs have been revealed, they turn out to be wider and more intrusive than officially described.
It's clear this administration would like to spy on everybody, then sift the information to see who warrants (without a warrant) closer inspection. When they reviewed phone records, for example, they looked at all the calls they could get their hands on, then homed in on people who made frequent calls to particular individuals, organizations, countries, etc. One has to wonder how far down the list they might have gone, or might still go.
For those of you who think this is okay because you like Bush and support what he's doing, ask yourselves how you'll feel when Hillary sits in the Oval Office and operates the levers of the unfetterred spy machine left to her by George W. Bush.
Could this be the Bush legacy? Passing along a vastly more powerful and secretive executive branch, along with a Supreme Court that appears eager to grant more power to the executive? Building a big, unassailable fortress for President Hillary Clinton? Would that be ironic, or what?