One of America’s most acclaimed magazine writers, Olivia Nuzzi of New York magazine, has been placed on leave while a “third-party review” is conducted after Nuzzi disclosed that she “had engaged in a personal relationship with a former subject relevant to the 2024 campaign while she was reporting on the campaign.

Robert F Kennedy Jr had an affair with a political reporter who he invited to his mansion and took hiking in the mountains for a feature on his presidential campaign...