I really, really hope the Republicans can get a debate on this resolution. For years, the left has been saying that Bush is a criminal, that he violated the Constitution, that he violated the law, that he has exceeded his powers, etc.
With a debate, the Democrats would have to put up or shut up. Since they know they have absolutely no chance of winning such a debate, they wish to cut it off before they embarass themselves.
You see, the Democrats don't really want to debate impeachment. They just want to be able to keep calling Bush a criminal - without supplying one shred of proof that would stand up in a court of law that he is. They want to be able to keep calling this program "illegal" or that one "unconstitutional" without having to argue the points rationally. They want to be able to continue their ridiculous name calling because it works - at least among their far left compatriots.