UGANDA has accused the U.S. ambassador of seeking to subvert last week's presidential election by trying to visit the main opposition candidate at his home, which has been surrounded by security forces since the vote. Troops prevented pop star-turned-legislator Bobi Wine from leaving his house shortly after he returned from voting in Thursday's presidential election, in which he ran against incumbent Yoweri Museveni. Museveni, 76, who has been in power since 1986, was declared the winner of the poll with 59% of the vote against 35% for Wine, who became famous after years of singing about government corruption and nepotism,…