I would sooner go for bounty. So much per head for those nabbed and brought in.
bounty/commission = po-tay-to/po-tah-to
:)
Bounty on those already in the country - another winner! Ya' have to be very careful about this one though. The point is to catch. detain and remove them, not to turn the country into Dodge City. The pro-illegal immigration faction would beat us over the head with that one.