John Kenneth Bush (born August 24, 1964) is an American attorney and United States Circuit Judge of the United States Court of Appeals for the Sixth Circuit. Bush graduated from Harvard Law School and practiced in Washington, D.C. and Louisville, Kentucky, where he served as president of the local branch of the Federalist Society. In 2017, he was nominated to a seat on the Sixth Circuit by President Donald Trump. During his confirmation hearings, it was revealed that Bush had authored pseudonymous blog posts in which he disparaged gay rights, compared abortion to slavery, and cited alt-right websites promoting birtherism and other false right-wing conspiracy theories. He was confirmed in the Senate by the Republican majority on a party-line vote of 51–47 in July 2017.