FILE - In this Aug. 3, 2015, file photo, a man rides his bike past the MGM Grand hotel and casino in Las Vegas. The operator of the Mandalay Bay casino-resort from which a gunman carried out the largest mass shooting in U.S. history has filed federal lawsuits against hundreds of victims. MGM Resorts International argues in lawsuits filed Friday, July 13, 2018 in Nevada and California that it is has “no liability of any kind” to the defendants under a federal law enacted in the wake of 9/11 terrorist attacks. (AP Photo/John Locher, File)