I strongly believe something besides writing our fearless leader and his minions is needed here. I don't suggest stopping those emails and faxes, but I would get some additional focus going on the employers and enablers of the illegals.

One idea is to get some sticky labels (peel off kind) and start putting them on windows or doors of businesses that employ illegals etc. Of course you would do this in a surreptitious manner ( I wouldn't worry a lot over this part because in guerilla fighting we must use courage and ingenuity)

Best to do this "messaging" on weekends when more people would see them, the business in question may even be closed but those driving or walking by would see. If the messages are on bright colors and put where they aren't easily peeled off all to the good. Hopefully water will be needed to remove them. Even if only 3 people see your sign before it gets removed those three will likely tell others about it, and so the message will still get passed.

Maybe that's an underhanded way to do things, "picket" the wrongdoers via stick on signs, but it's a way to tell them --we notice, we don't condone what you're doing, you're hurting the American people.

This method is similar to what worked for the grape pickers way back. It shamed the consumer into not buying the grapes and people DID pay attention. Also this is similar to union anti-scab tactics. Don't cross this line. You point out the problem, you point out a perpetrator, and you let people know not to do business with that company.

Some sample messages might be:
"This business hires illegals and pays them with YOUR money".
"You won't get a job here unless you speak Spanish. Don't even bother"
"Why shop here when you can buy from legal Americans?"
"This business must support illegal immigration because it sure hires a lot of illegals"

Most printers can print out labels (bumper sticker size), but even handwritten messages in magic marker would work just fine.

I suspect that efforts focused simply on the politicians may go on for decades while the illegals keep coming. I think shaming and blackballing businesses for using illegals may be more productive much faster.