The U.S. Supreme Court decided on Nov. 3 that it would hear arguments regarding the legality of the Trump-era ban on "bump stocks."
Bump stocks are used to make semiautomatic weapons fire more quickly.
Some people don't like them.
After it was alleged that the Las Vegas music festival mass shooter had used a bump stock to fire more quickly while massacring innocent people, gun-control enthusiasts wanted action taken quickly.
President Donald Trump complied with their demands and quickly got together a ban on bump stocks.
Now, the Supreme Court is being asked to rule on the matter by Joe Biden's administration and gun rights activists after lower courts kept coming up with different opinions about whether the ban was constitutional.
It was kind of a surprise to some Republicans that Trump would have ever banned bump stocks in the first place. Just a few years earlier, in a much more liberal administration, it was determined that "a bump stock should not be classified as a machine gun and shouldn't be banned under federal law."
But when a 64-year-old retired postal worker used rifles with bump stocks to fire more than 1,000 rounds in 11 minutes into a crowd of thousands of people, it was requested that Trump ban bump stocks.
Trump's new law went into effect in 2019, just a couple of years after the shooting in October 2017 in Las Vegas.
Some courts have decided that the language around this whole law isn't as clear as it should be though, and there may not have been a way for Trump to implement the ban without violating Americans' Second Amendment rights.
One court said that Congress would have to change federal law to ban bump stocks.
"The definition of ‘machinegun’ as set forth in the National Firearms Act and Gun Control Act does not apply to bump stocks," Judge Jennifer Walker Elrod wrote.
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