A Nevada congressional candidate and a former celebrity car dealer has been slapped with a sweeping ban from MGM Resorts properties across the country after months of fiery social media attacks on the casino giant, according to TMZ.MGM fired off a cease-and-desist letter threatening Republican Bobby Khan with arrest, fines, and jail time if he sets foot at any of their Vegas Strip locations, including the Bellagio, Aria, Cosmopolitan, MGM Grand, Mandalay Bay, Luxor, New York-New York, Excalibur,...