Liberals argue that illegal aliens just come to do work that "Americans won't do." (Well, not for what you pay illegals, no.) If they're working, they are either off the books (which is illegal), on a stolen Social Security number, or on a stolen identity, or simply lying on their forms. All of those things are illegal. So being here without proper documents is not their only offense.
Prosecute those who are here illegally, those who are working illegally, and those who employ them. All should be in jail or deported. You can raise teh fine as high as you like, but it will just get passed along to us. (And we should make it prohibitive.) The way to stop the hiring of illegal aliens is to punish the employers with jail time. I look forward to seeing that.