Justice Brett Kavanaugh is nearing a year on the Supreme Court, yet Democrats haven’t stopped trying to undo his confirmation. On Tuesday two Members of the House Judiciary Committee, Jerry Nadler and Hank Johnson, asked the National Archives to produce more files, some dating back 18 years, from Justice Kavanaugh’s time in the White House.

Their letter demands more documents than the thousands supplied last year, his office files from his George W. Bush years, and “emails sent to or received by Justice Kavanaugh, including...