On January 18, former President Donald Trump filed his brief in the U.S. Supreme Court in the Colorado ballot access case, Trump v Anderson, 23-719.
His arguments, in this order, are: (1) Section Three doesn’t apply to president and vice-president; (2) Trump did not engage in insurrection; (3) Section Three needs an implementing law and Congress has never passed such a law; (4) Section Three doesn’t relate to running for office, but holding office; (5) The Colorado challenge statute doesn’t permit a Colorado state court to order the Secretary of State to remove a candidate from a ballot.
The brief does not use the argument that governments cannot interfere with a political party’s process for choosing a nominee, but that is because the Colorado Republican Party is also in the case and the party makes that argument.