Actually, the way you want to use this appeals to me. As your statement is accurate, paying assets siezed as commissions to the INS and Border Patrol agents directly would motivate them to enforce the law regardless of the recalcitrance of their superiors. You've got something here.
ijcr and others suggestions about employers have merit also, but your point about existing law is the place to start to sort out who is a "knowing" illegal employer.
I enjoy reading your opinions, go ahead and submit some to likely venues, I think you will be pleasntly surprised.
Actually, my proposal was more institutional... But your idea of some sort of bounty on illegals is worth further consideration. Especially since the illegals would be paying it themselves.
One problem would be to build in safeguards against overzealous agents.
Hmmmm... How about a similar (but higher) bounty put on politically correct recalcitrant superiors? Just bring in the head or hide for verification...
But don't limit it to INS and Border Patrol agents, let the citizenry at large participate as well. With the right promotional efforts you could just about turn it into a sort of Reality TV game show.
That or I watched The Running Man a few too many times and should not be drinking straight Barabados rum this late at night.