PORT-AU-PRINCE, Haiti — President Michel Martelly made his farewell speech to Haiti as he departed office Sunday with no successor yet chosen because a runoff election was scrapped last month amid violent protests and deep suspicions about vote rigging. In a nearly 20-minute speech before a joint session of Parliament, Martelly said his "biggest regret is that the presidential election was postponed." Addressing the Haitian people, he said he worked "night and day" to improve the country and was "ready to answer...