Not only has President Bush -- (YES, DUBYA TO ALL BUSH-BOTS OUT THERE) right on down through our GOP Congress-critters ignored the obvious, and the media won't touch it with a ten-foot pole either because it would only help the GOP.
I surmise the ONLY reasons few Republicans will stick their necks out is:
a) They will be demonized by the Rats and media as "intolerant, discriminatory, and hateful" and "prove' a 'Big Tent' really doesn't exist
b) Fear of Latino/Hispanic/ voter backlash
c) If the President actually publicizes and aggressively enforces the border LIKE HE'S SUPPOSED TO, see reason a)
It's just a political game both parties are playing for power -- in the meantime, we, the citizens get lip service as the illegal invasion continues forth UNIMPEDED.