Of course Tancredo wants to stop Bush's proposal dead on its tracks, he'd be out of a job if the immigration issue was ever brought under control.
Right now, Tantrum Tom earns a fat living feeding the unswerving political suicide wishes of the reality challenged, who continually support his proposals without paying the most minuscule bit of attention to the fact that no single piece of immigration legislation he's ever proposed, has achieved anything beyond getting him re elected...even after he swore he would not seek that re-election.
Tantrum Tom is one of my two favorite fiction authors, the other one being Stephen King, and at least he's not trying to pass his stuff off as serious literature.