Members of Pence's team had said that Pence harbored some "bitterness" toward Trump after the Jan. 6 riot at the Capitol building.

"Fox News Sunday" host Chris Wallace reported earlier this month that according to Pence's aides, Trump's failure to call off the mob and ensure the safety of his loyal second-in-command represented the "ultimate betrayal."

No Pence. YOU betrayed Trump, the American people and your duty to uphold the Constitution, and we won't forget it either.