Two lower courts had already rejected the legal challenge by Democrat Josh Kaul, who argues that Musk's offer violates a state law.

In a buoyant address to supporters moments after taking the oath of office in January, President Donald Trump ribbed House Speaker Mike Johnson over the number of Republican lawmakers he had tapped for administration posts — vacancies that only tightened the GOP’s already slender majority.

Two days ahead of the pivotal Wisconsin Supreme Court election, billionaire Elon Musk gave away $2 million during a stop in Green Bay Sunday night, despite Democratic Attorney General Josh Kaul spending the weekend attempting to block the payments.