"If we were serious about controlling illegal immigration, we would place the burden on employers: be able to prove that every one of your employees is here legally, or pay a stiff fine."

You have a point. But, if we were really serious we would start with the core issue: WHY the Mexican gov't is exporting, yes exporting, its excess population to this country. THAT is where the problem really lies. They actually tell there people what where and how to migrate illegally, it is actively encouraged by the Mexican gov't.

They have one of the most corrupt gov't on the planet. Right now they are allowing drug cartels to control almost every Mexican province on our southern border.