The U.S. Supreme Court on Monday said states cannot bar former President Donald Trump from the ballot using a rarely invoked provision of the 14th Amendment, overturning a decision from Colorado's top court and handing the GOP presidential front-runner a victory in an unprecedented case that threatened to derail his bid to return to the White House.

The U.S. Supreme Court on Monday said states cannot bar former President Donald Trump from the ballot using a rarely invoked provision of the 14th Amendment, overturning a decision from Colorado's top court and handing the GOP presidential front-runner a victory in an unprecedented case that threatened to derail his bid to return to the White House.

In December, the Colorado Supreme Court determined that Trump was ineligible for the presidency due to his conduct surrounding the Jan. 6, 2021, attack on the U.S. Capitol. The Colorado court's divided decision rested on the Section 3 of the 14th Amendment, known as the insurrection clause, which bars oath-taking insurrectionists from holding public office. 

In its opinion on Monday, the U.S. Supreme Court said only Congress can enforce the clause. The ruling resolves challenges to Trump's eligibility for office pursued by voters in several other states and comes one day before Super Tuesday, when voters in 15 states will cast their ballots for the Republican presidential nomination.

"Responsibility for enforcing Section 3 against federal officeholders and candidates rests with Congress and not the states," the court said in its 13-page unsigned opinion. "The judgment of the Colorado Supreme Court therefore cannot stand."

CBS News