Bush has said many times that legal immigration should be increased. "Guest workers" would benefit from that. If we cant deport them now, like you claim, we wont be able to deport them later. Hispanics wont vote for parties that try to deport hispanics. We will have to change immigration laws to "reflect reality".
I have seen a lot of support by LEGAL hispanics who do not support ILLEGAL hispanics. They stood in line, they paid the price and they are no more supportive of illegal immigration than you or I. Legal hispanics are possibly the total answer to this illegal immigration problem.