I doubt whether someone who campaigns against illegal immigration and who intends to run for governor on that would be foolish enough to allow a subcontractor to hire illegal aliens.
And, here's the Chicago Tribune trying to cash in on this:
http://www.fortwayne.com/mld/newssentinel/news/editorial/13126500.htm
Their suggestion that "Maybe Oberweis will stop screaming about "smear tactics"" is followed shortly by a suggestion that he watch the DVD shot by the "immigrant's rights groups".