Cuyahoga County Auditor Frank Russo resigned Thursday just before charges were filed in connection with the largest and most widespread corruption probe in Ohio history. Russo resigned by letter to Cuyahoga County Commissioner Peter Lawson Jones at about 9 a.m., said Jim McCafferty, spokesman for the commissioners. Russo, 60, of Bratenahl, was then charged at 9:30 a.m. in a 21-count criminal information in connection with the Cuyahoga County public corruption investigation. Federal prosecutors allege that Russo enriched himself at the expense of taxpayers. Here is Frank Russo's resignation letter, which was addressed to county commissioners: I humbly submit my resignation...