Retired federal appeals court Judge J. Michael Luttig, a prominent conservative legal scholar put on the bench by President George H.W. Bush, is endorsing Vice President Kamala Harris over former President Donald Trump, whose candidacy he describes as an existential threat to American democracy. It will be the first time Luttig, a veteran of two Republican administrations, has voted for a Democrat. “In the presidential election of 2024 there is only one political party and one candidate for the presidency that can claim the mantle of defender and protector of America’s Democracy, the Constitution, and the Rule of Law,” Luttig...