House Republicans love to make a problem out of bigoted Democrats in Congress, and rightfully so. But their concerns fall flat when House GOP leadership continues to allow two congresspeople to tie the caucus, and the party, to white supremacist losers. GOP Rep. Marjorie Taylor Greene of Georgia recently attended the America First Political Action Conference, organized by Holocaust denier and white nationalist Nick Fuentes. Greene claimed she didn’t know Fuentes or his views and never heard him speak, and yet she defended her appearance at the conference and said that she wouldn’t “cancel others in the conservative movement, even...