Supreme Court examines whether Trump can appear on Colorado ballot. The former president is appealing a ruling by Colorado's highest court that excludes him from the Republican primary elections due to his attempts to overturn the results of the 2020 election.

Oral arguments before the nine justices will begin shortly after 10:00 a.m. and could last several hours. The case could have broad implications if Trump loses, because other states could follow his lead, throwing up obstacles to his bid to regain the presidency this fall.