It is rare for news events, even as momentous as the past week’s, to drown out absolute proof that a candidate for president has lied willfully to the public and Congress. Yet precisely such proof has emerged, and it has appeared not only in this newspaper but also in The New York Times (albeit with a headline designed not to draw attention).

Americans learned this spring that Hillary Clinton, in contravention of federal records rules and current law, conducted all her State Department business using a private email address, housed in a server at her home in Westchester County, N.Y.