EXCLUSIVE — Sen. Cynthia Lummis (R-WY) and eight of her GOP colleagues filed an amicus curiae brief with the Supreme Court on Friday in support of gun owners fighting the federal government’s ban on bump stocks. 

The high court is weighing whether to uphold a federal appeals court ban on bump stocks, which are devices that enable semi-automatic weapons to fire multiple rounds quickly. The ban was imposed in 2019 under then-President Donald Trump. He ordered the Bureau of Alcohol, Tobacco, Firearms and Explosives to review the devices in response to the 2017 Las Vegas mass shooting.