I say allow a "legal" conduit, crack down on employers using illegals,.....
If we are not enforcing the existing laws that prohibit hiring illegals now, why should people expect that after the guest worker amnesty program begins, those laws will suddenly be enforced?
The reason that these laws are unenforceable is that juries refuse to convict employers for hiring illegal aliens.
Prior to 1965, it was perfectly legal to hire someone from Mexico, as long as you followed some specific rules. Prior to 1965, juries routinely convicted employers who violated the law and hired illegal immigrants. Now, those juries refuse to convict. They don't view hiring someone from Mexico as a criminal act in and of itself.
Change the legal environment to provide a legal path for hiring immigrants, and juries will be far more likely to generate convictions.