The Supreme Court on Monday delivered a blow to Minnesota’s attempt to prevent young people from obtaining permits to carry firearms in public.

The Supreme Court rejected an appeal from Minnesota Monday that would have prevented its residents ages 18 through 20 from being permitted to carry firearms in public.

Minnesota can no longer enforce its law barring people younger than 21 years old from obtaining a permit to carry a handgun in public after the U.S. Supreme Court refused on Monday to hear its appeal of a judicial decision deeming the age restriction a violation of constitutional protections for gun rights.