If they are dead set on passing a Guest Worker bill, then make it just that, a plan for temporary workers. Let them work, but no free access to healthcare or education or any other benefits that should only go to citizens. Also no families coming in where the babies would then be declared citizens.
You and I both know the pro-invasion politicians would never put such stipulations on the invaders. That's why this whole scheme needs to killed. Once the invasion is sanctioned it's over, they're here for good. Making babies, driver's licenses, schools, hospitals, hell my local Wal-Mart already has food with Spanish only labels. Vicente will empty his jails and asylums like Castro did and send us the dregs of his society.