FILE - In this Oct. 15, 2014 photo, an American flag waves from a makeshift flag pole in front of a concrete slab that once was a house in Louisville, Miss. The April 28 tornado that destroyed the house, also heavily damaged the particle board and plywood industries in the background. The federal government says the city of Louisville should repay a $25.4 million grant awarded for recovery from a 2014 tornado. (AP Photo/Rogelio V. Solis, File)
Louisville cornerback Jaire Alexander, left, celebrates his interception with teammate Trumaine Washington during the first half of an NCAA college football game against Clemson on Saturday, Oct. 1, 2016, in Clemson, S.C. (AP Photo/Rainier Ehrhardt)
Clemson quarterback Deshaun Watson (4) throws a pass as Louisville linebacker Stacy Thomas (32) defends during the first half of an NCAA college football game Saturday, Oct. 1, 2016, in Clemson, S.C. (AP Photo/Rainier Ehrhardt)
FILE - In this Aug. 5, 2016, file photo, Louisville coach Bobby Petrino looks on as his team goes through workouts during NCAA college football practice in Louisville Ky. Four and a half years after being fired by Long at Arkansas as a pariah, Petrino is rising again. His Louisville team is No. 3 in the country heading into showdown at No. 5 Clemson and his quarterback has gone from three-star prospect to Heisman Trophy front-runner in a little more than one season of college football. AP Photo/Timothy D. Easley, File)
Louisville quarterback Lamar Jackson looks for a receiver during the first quarter of an NCAA college football game against Florida State, Saturday, Sep. 17, 2016 in Louisville Ky. (AP Photo/Timothy D. Easley)
National Rifle Association executive director Chris W. Cox speaks at the National Rifle Association convention Saturday, May 21, 2016, in Louisville, Ky. (AP Photo/Mark Humphrey)
National Rifle Association executive director Chris W. Cox speaks at the National Rifle Association convention Saturday, May 21, 2016, in Louisville, Ky. (AP Photo/Mark Humphrey)
Texas A&M head coach Kevin Sumlin watches the action in the first half of the Music City Bowl NCAA college football game against Louisville Wednesday, Dec. 30, 2015, in Nashville, Tenn. (AP Photo/Mark Humphrey)
Mario Gutierrez rides Nyquist to victory during the 142nd running of the Kentucky Derby horse race at Churchill Downs Saturday, May 7, 2016, in Louisville, Ky. (AP Photo/David J. Phillip)
CORRECTS LAST NAME TO GUTIERREZ FROM GUITIERREZ - Mario Gutierrez celebrates after riding Nyquist to victory during the 142nd running of the Kentucky Derby horse race at Churchill Downs Saturday, May 7, 2016, in Louisville, Ky. (AP Photo/Garry Jones)
Democratic presidential candidate, Sen. Bernie Sanders, I-Vt., speaks during a campaign rally Tuesday, May 3, 2016, in Louisville, Ky. (AP Photo/Charlie Riedel)
Miami head coach Jim Larranaga calls out to players during the first half of an NCAA college basketball game against Louisville, Saturday, Feb. 27, 2016, in Coral Gables, Fla. (AP Photo/Wilfredo Lee)
Louisville defensive end Sheldon Rankins (98) runs through drills during NCAA college football practice for the Senior Bowl, Tuesday, Jan. 26, 2016, at Fairhope Municipal Stadium, in Fairhope, Ala.(AP Photo/Brynn Anderson)
Louisville safety Josh Harvey-Clemons (25) wraps up Virginia wide receiver Olamide Zaccheaus (33) during the first half of an NCAA college football game Saturday, Nov. 14, 2015, in Louisville, Ky. (AP Photo/Timothy D. Easley)
This photo provided by the Louisville (Ky.) Police Department shows Louisville Metro Police Officer Nathan Blanford. An African man was shot and killed by Blanford, a Louisville Metro Police officer Saturday afternoon, June 13, 2015 after police say he grabbed a flagpole and swung it at the officer. (Louisville (Ky.) Police Department via AP)
Triple Crown winner American Pharoah checks out the crowd surrounding the paddock at Churchill Downs in Louisville, Ky., Saturday, June 13, 2015. American Pharoah was on hand for a parade in front of the 30,000 fans in attendance and the engraved trophy presentation to the owners. (AP Photo/Garry Jones)
Sen. Rand Paul, R-Ky., holds up his cell phone as he speaks before announcing the start of his presidential campaign, in Louisville, Ky., in this April 7, 2015, file photo. (AP Photo/Carolyn Kaster, File)