And for all you people who say "no problem" to Bush having warrantless search abilities - what is to stop him from using it to spy on his political foes and use that info in campaigns? No impartial judge to put his actions in check.
Spying on American citizens for political purposes is clearly and obviously illegal.
Situation with judicial oversight:
Because such spying is illegal, in order to do it, Bush cannot go to a court. Instead, he needs the cooperation of whoever is doing the spying. It is a conspiracy, and that person must keep it a secret because both he and Bush are breaking the law, and will get in trouble if it is exposed to either the judge or the public.
Situation without judicial oversight:
Because such spying is illegal, in order to do it, he needs the cooperation of whoever is doing the spying. It is a conspiracy, and that person must keep it a secret because both he and Bush are breaking the law, and will get in trouble if it is exposed to the public.
In both cases, the illegal spying can happen as long as Bush and whoever is doing the spying are willing to form a conspiracy to break the law. If Bush cannot find or trust someone to form such a conspiracy, he will not do it. I don't see that judicial oversight provides any protection. The protection I do see it providing is only in situations where those doing the spying don't think it is illegal, and hence are willing to submit it to a judge. It can stop the slow expanse of government powers, but it cannot stop someone determined to leap right over the law and break it explicitly. So I don't see judicial oversight as the primary line of defense against truly outrageous abuses of power, because it simply isn't.