The U.S. Supreme Court on Thursday heard a historic case challenging Donald Trump's ability to hold office again over his role in the Capitol attack on Jan. 6, 2021.
Trump asked the justices to overturn an unprecedented Colorado Supreme Court decision deeming him ineligible to appear on the state's GOP primary ballot because, it said, he "engaged in insurrection." Trump has long denied any wrongdoing.
The legal battle centers on a previously obscure provision of the Constitution's 14th Amendment -- Section 3 -- ratified shortly after the Civil War.