At The New York Times, Matt Flegenheimer writes that Seddique Mateen, the father of the man who killed 49 Americans at an Orlando nightclub in June, attended a Hillary Clinton rally in Kissimmee, Florida, on Monday. Clinton disavowed Mateen’s endorsement Tuesday. An email Clinton’s campaign sent supporters read, “This individual wasn’t invited as a guest and the campaign was unaware of his attendance until after the event.”