I agree that there probably needs to be a 'mechanism' to allow for guest workers who actually want to come and visit and earn money in some honest fashion (and then go home) but a lot of them want to come here only to smuggle illegals aliens and drugs and guns and that part of the Mexican 'Invasion' is most definitely not alright!
Bush has let us down on the southern invasion. He has been spot on on the Muslim attempt to create a Caliphate.