ProPublica is a Pulitzer Prize-winning investigative newsroom. Sign up for to receive stories like this one in your inbox.The state of Ohio has put General Motors on notice that it may be forced to repay more than $60 million in public subsidies as a result of the automaker closing its massive assembly plant last year in Lordstown.The state’s collection effort, initially outlined in a letter to GM in March, has not been previously reported, and the automaker itself has not disclosed the potential liability to shareholders in its corporate filings.State officials say the Lordstown...…ProPublica is a Pulitzer Prize-winning investigative newsroom. Sign up for to receive stories like this one in your inbox.The state of Ohio has put General Motors on notice that it may be forced to repay more than $60 million in public subsidies as a result of the automaker closing its massive assembly plant last year in Lordstown.The state’s collection effort, initially outlined in a letter to GM in March, has not been previously reported, and the automaker itself has not disclosed the potential liability to shareholders in its corporate filings.State officials say the Lordstown...WW…