Trump prevails in Supreme Court challenge to his eligibility. Here’s the latest.

The Supreme Court ruled on Monday that former President Donald J. Trump should remain on Colorado’s primary ballot, rejecting a challenge to his eligibility for another term that could have upended the presidential race by taking him off ballots around the nation.

Though the justices offered different reasons, the decision was unanimous. All of the opinions focused on legal issues, and none took a position on whether Mr. Trump had engaged in insurrection.

All of the justices agreed that individual states may not bar candidates for federal office under a constitutional provision, Section 3 of the 14th Amendment, that bars insurrectionists from holding office. Four justices would have left it that.

But a five-justice majority, in an unsigned opinion, went on to say that Congress must act to give Section 3 force.

“The Constitution makes Congress, rather than the states, responsible for enforcing Section 3 against federal officeholders and candidates,” the majority wrote, adding that detailed federal legislation was required to determine who was disqualified under the provision.

• In a joint concurring opinion, the court’s three liberal members — Justices Sonia Sotomayor, Elena Kagan and Ketanji Brown Jackson — expressed frustration at what they said was the majority’s needless overreach. “Although federal enforcement of Section 3 is in no way at issue,” they wrote, “the majority announces novel rules for how that enforcement must operate. It reaches out to decide Section 3 questions not before us, and to foreclose future efforts to disqualify a presidential candidate under that provision. In a sensitive case crying out for judicial restraint, it abandons that course.”