The case had potentially trillions of dollars in tax consequences for the federal budget, and the court's decision could have severely limited congressional options in enacting tax policy.
Supreme Court Justice Clarence Thomas belatedly acknowledged more travel paid by Republican megadonor Harlan Crow, while several colleagues reported six-figure payments as part of book deals.
Trump's team vowed to appeal the decision. If it's in front of the U.S. Supreme Court by Jan. 5, Trump's name will stay on the ballot. Legal experts say the question is likely to keep coming up.
Justice Sandra Day O'Connor, whose funeral is Tuesday, is being remembered as a Supreme Court trailblazer. After retiring from the bench in 2006, she worked to expand civics education in schools.