Background Checks Resource

I need to do tenant screening has anyone out there had any experience with leasing to a sex offender I did find this blog www.sexoffenderissues.blogspot.com that talks about sex offender issues but I cannot find any specific information about leasing a house to someone with this crime. I need to make a decision pretty soon and I do not want to violate any laws and be sued.  If you have delt with this before please let me know.