The U.S. Supreme Court has no other choice than to decide whether former President Donald Trump remains on ballots in states seeking to remove him, legal experts say.

Colorado’s Supreme Court and Maine’s secretary of state both have determined that Trump is ineligible to remain on their respective state’s election ballot.

The high courts in Michigan and Minnesota, meanwhile, allowed Trump to remain on those states’ primary ballots, and California’s secretary of state decided likewise this week.

Trump’s legal team is preparing to file challenges to the Colorado and Maine decisions as soon as Tuesday, The New York Times reported.

The various results likely mean the U.S. Supreme Court will rule one way or the other concerning Trump’s ballot eligibility.

“The Colorado case definitely increased the likelihood that the U.S. Supreme Court will intervene,” Doug Spencer, a law professor at the University of Colorado, told the Washington Examiner.