Thursday February 19, 4:27 PMGay couples queue to wed in San Francisco as Bush weighs in against them Scores of gay couples married in San Francisco as US President George W. Bush said he was "troubled" by the same-sex marriages, which have won a legal respite.Bush said he was following the situation "very carefully," after more than 2,600 homosexual marriages were sanctioned by the city during the past six days.The president, who has warned several times that he may seek or endorse a constitutional amendment making such unions illegal, told reporters at the White House that "these events are influencing...