What was the company who owned the venue where the Miss USA 2017 was held? 
Miss USA 2017:  It was held on May 14, 2017 at the Mandalay Bay Events Center in Las Vegas, Nevada. Mandalay Bay Events Center:  It is owned and operated by MGM Resorts International and hosts a number of various music, basketball, boxing and mixed martial arts events.
MGM Resorts International