Clint Hill, a former member of the Secret Service, and his wife Lisa McCubbin Hill talk about their new book, My Travels with Mrs. Kennedy, which includes tales of bringing a Pakistani horse into the US without quarantine, what The Crown got wrong about Mrs. Kennedy's lunch with Queen Elizabeth II, and Clint and Mrs. Kennedy eating Moroccan makhjoun in Marrakech. Spoiler alert—Mahjoun is essentially a hash brownie.