The Obama Justice Department has no tolerance for such things.
From the Free Beacon:
The DOJ claims that Nebraska Beef Ltd., a Nebraska-based meat packing company, “required non-U.S. citizens, but not similarly-situated U.S. citizens, to present specific documentary proof of their immigration status to verify their employment eligibility.”
After receiving pressure from the government, Nebraska Beef agreed to pay $200,000 in a civil penalty settlement and said they will establish an uncapped back pay fund for people who lost wages because they could not prove they are in the country legally.
I guess E-verify don't mean what it used to......