The Jan. 6 committee, which held its ninth and likely final hearing Thursday, has lionized the figure of the Decent Republican. Liz Cheney, vice chair of the committee, was its obvious star, imbued with moral authority by the fact that she’d sacrificed her position in Republican leadership, and possibly her political career, to stand up to Donald Trump. There were many others. “When you look back at what has come out through this committee’s work, the most striking fact is that all this evidence comes almost entirely from Republicans,” the committee’s Democratic chair, Bennie Thompson, said Thursday. This attempt to...