Jail would be just fine for these anti-American lawbreakers. I'm not holding my breath, though. The slaveholders have a pretty good grip on Bush and top GOPers. Gotta keep those fairways green for the Rich Guy to amuse himself...
I do think that there's a potential means for employers to get their butts sued--civil rights violations, restraint of trade, trafficking in quasi-slavery, maybe even RICO. Then they couldn't even afford slave wages to get their toilets scrubbed for them.
IMO, you have issues with people who are successful for the crime of building buildings or farmers who need people to pick their produce.