Lord Peter Mandelson has been asked to testify to the US Congress over his relationship with the paedophile financier Jeffrey Epstein. A letter from two Democrat members of the House of Representatives called on the former British ambassador to Washington to answer questions from the House Oversight Committee as part of their probe into Epstein. The disgraced peer's links with Epstein have led to calls for Sir Keir Starmer to stand down as prime minister. The prime minister's judgement has been questioned by critics over his appointment of Lord Mandelson as US ambassador, a role considered the most prestigious posting...