She said Mr. Trump, who refused to accept the election outcome and the rejection of his ballot fraud claims by more than 60 courts, was undermining democracy and the Constitution. “Those who refuse to accept the rulings of our courts are at war with the Constitution,” said Ms. Cheney, the daughter of former Vice President Dick Cheney and a rising star in the GOP until she crossed Mr. Trump. “Our duty is clear. Every one of us who has sworn the oath must act to prevent the unraveling of our democracy. This is not about policy. This is not about partisanship. This is about our duty as Americans. Remaining silent, and ignoring the lie, emboldens the liar,” she said.