The visit unfolds amid friction between Trump and UK Prime Minister Keir Starmer over immigration policy, the war in Iran and the controversial appointment of Peter Mandelson as ambassador. Mandelson was arrested in February on suspicion of misconduct in public office, and reports say Scotland Yard is probing alleged past information-sharing with Jeffrey Epstein. Trump has publicly criticized Mandelson’s appointment and said Starmer could recover politically if he changes course on key policies.