Dick Cheney, the former vice president, made just about the nastiest crack a Republican could offer about President Trump’s foreign policy when he said it “looks a lot more like Barack Obama than Ronald Reagan.”

Obviously, the comparison is flawed. But say this much for Cheney: He’s the rare Republican who isn’t intimidated by Trump these days. Cheney made a string of similarly blistering comments at a supposedly off-the-record conversation with Vice President Pence at a gathering in Sea Island, Ga., last weekend hosted by the American Enterprise Institute.

Cheney’s remarks tell us that we are experiencing what may be a political realignment in the United States, in which some of our political labels don’t work very well. There’s a populist wing in both parties, with Trump and some progressive Democrats expressing broadly similar concerns about America’s overextension in the world and the unfairness of the existing global order to working people.