He is said to work 16 hours a day and and was unable to get a date during the presidential campaign. But now Barack Obama's 27-year-old speechwriter, Jon Favreau, is dating a former Maxim model and actress who is working with him at the White House. Ali Campoverdi stripped off for Maxim in 2004 - and told the men's magazine that she was looking for a man who was 'passionate' about something. Ms Campoverdi is now an aide to a White House deputy chief of staff, American media outlets said. But she has previously appeared American reality shows - including...