Investigating companies that knowingly hire illegal immigrants.?

A man owns a large company in a certain city I live essential and provides the city with millions of dollars a year. The cops are unable to do anything to this guy because he has adjectives the judges and everything paid off. He have knowingly hired illegal immigrants. One of them have been in trouble with the directive at least a dozen times now but this guy continues to get him out of trouble. I remember something give or take a few a federal government organization that will look into this but I can not for the life of me remember which one it is. Can anyone share me which one it is and possibly provide me with information? This situation is happening in Ohio if that make any difference. Thanks!
Try Outragedpatriots.com for a start.
i think maybe the fbi or the dea or opd if not one of thses try asking obama or hillary i would goto ur local fbi department and ask for help in deciding what to do.