LAS VEGAS, NV - OCTOBER 03: People sign a poster at a makeshift memorial at the base of the Welcome to Fabulous Las Vegas sign in memory of the victims of Sunday night's shooting, on October 3, 2017 in Las Vegas, Nevada. Late Sunday night, a lone gunman killed at least 59 people and injured more than 500 after he opened fire on a large crowd at the Route 91 Harvest country music festival. The massacre is one of the deadliest mass shooting events in U.S. history. (Photo by Ethan Miller/Getty Images)

NEW ORLEANS (AP) — A federal appeals court in New Orleans has upheld a federal ban on “bump stocks” — devices attached to semiautomatic firearms to let a shooter fire multiple rounds with a single trigger pull. The ban was instituted in 2019 by the Trump administration after a sniper in Las Vegas used the device to help him massacre dozens of concertgoers in 2017. The 5th U.S. Circuit Court of Appeals affirmed a Texas-based federal judge’s ruling in a lawsuit challenging the ban. The ban has also survived in three other circuit appeal courts. One of those cases is on appeal to the U.S. Supreme Court.