I have contacted my senators and representative (in Pennsylvania) and the most specific response I received was from Senator Santorum today.
In his letter he responded to the issues I wrote about but here is a verbatim comment. "I will not vote for legislation that contains amnesty provisions".
This is the most specific of my responses. I also received a response from Senator Arlen Specter and that would make you barf.
Anyway, I wanted to pass this info along as Senator Santorum is up for re-election in Pennsylvania this year.