Video: FOX 11 Investigates: Presidential campaigns still owe Wisconsin cities for campaign stops
Erin Chlopak worked as an attorney for the FEC for nearly a decade, specializing in campaign finance issues. Now, she works for the Campaign Legal Center-- a D.C. based watchdog group. "The issue of the payment itself is not so much a campaign finance law question, but really kind of a matter of state law and even contract," Chlopak said.
Watch the full video here.