The Ohio attorney general who once vowed to dismantle the state's "culture of corruption" resigned yesterday just hours after a raid on his office by state troopers seeking evidence of illegal activity. Democrat Marc Dann is embroiled in scandal linked to an affair with an aide and was under threat of impeachment after workers filed complaints of sex harassment in his office, reports the Columbus Dispatch. Dann is also the target of other investigations into expenditures and management. (More Marc Dann stories.)