ATLANTA, Ga. (CBS46) -- A Cobb County man might sue a Georgia lawmaker after she claimed he told her, “Go back to where you came from,” during a confrontation at a grocery store. In a statement Monday, Eric Sparkes told CBS46 he’s “in the process of exploring with attorneys a defamation lawsuit against her.” ... The Cobb County Republican Party also speaking out, calling on Rep. Thomas to resign if "it turns out to be true she defamed a private citizen and Democratic constituent for political purposes." ...