Do you think that G.W. Could have moved immigration legislation through congress, gotten it passed and signed into law and had it implemented in the Executive Branch, and had every over stayer picked up and deported in nine months. If you do, you are not living in the real world, and ought to restrict your comments to the other patients.
I think Bush could have aggressively enforced existing law focusing on people from the middle east or given approval to the CIA to ramp up covert operations against Al-Qaeda which they had been requesting since March!