U.S. Rep. Ruben Kihuen, D-Nev., left, and Clark County Commissioner Steve Sisolak following a press conference on the mass shooting, at the Las Vegas Metropolitan Police Department headquarters in …

U.S. Rep. Ruben Kihuen, D-Nev., left, and Clark County Commissioner Steve Sisolak following a press conference on the mass shooting, at the Las Vegas Metropolitan Police Department headquarters in Las Vegas, Monday, Oct. 2, 2017. Erik Verduzco/Las Vegas Review-Journal