Enforcement first -- then you can talk about Amnesty.

Books have been written about this, but here's the quick summary:

1. Most importantly: The problem with amnesty is that you are holding up a gigantic flashing sign to Central and South America. The sign says: "Sneak into the U.S.! Sure, they'll talk tough, but the bottom line is, if you just hold on long enough, they'll let you stay! It happened in the 80s, it happened in the 2000s, and it will happen again!"
2. It also validates hundreds of thousands of people who broke the law over those who actually followed the law.
3. Agreeing for amnesty in return for *promises of future enforcement* is a swindler's game. The people who offer such promises know full well that their "promises" are worthless -- they will be tied up in court, circumvented via the bureaucracy, not enforced, etc.

"Comprehensive Reform" is a gigantic, bipartisan scam. We don't need or want it. We need enforcement first. Everything else can be settled later.