Beyonce and Jay-Z's paparazzi-trailed trip to Havana has prompted questions from two members of Congress. Thousands of Americans every year get around the U.S. embargo on tourism to Cuba with waivers for academic, religious or research work -- or by sneaking in through a third country. (Jack Nicholson, Jodie Foster and Will Smith are among the VIPs who've traveled there, according to photos spotted on the wall of one Havana restaurant, reports AP).