SAN FRANCISCO (AP) — A California attorney who aided President Donald Trump’s efforts to overturn the 2020 presidential election results has lost his license to practice in the state.

The California Supreme Court on Wednesday ordered John Eastman disbarred and his name stricken from the state roll of attorneys. It caps a yearslong effort by the state bar to strip Eastman of his law license after he developed a legal strategy to have then-Vice President Mike Pence interfere with the certification of Joe Biden’s presidential victory.

George Cardona, chief trial counsel for the State Bar of California, said the decision follows clear evidence that Eastman “advanced false claims about the 2020 presidential election to mislead courts, public officials, and the American public.”

His attorney, Randall Miller, argues that the ruling raises significant constitutional issues and plans to seek review in the U.S. Supreme Court, claiming it violates Eastman’s First Amendment rights.

The States United Democracy Center, which filed an ethical complaint against Eastman, expressed satisfaction with the decision, stating that his actions had adverse consequences for democracy.