Republican lobbyists are working to persuade GOP lawmakers to change their position on same-sex marriage and revise the party's official position that "traditional marriage" is between a man and a woman. Gay marriage advocates say their efforts are paying off as an increasing number of members of the congressional delegation are diverging from the party line, The Hill reported. "The issue is losing its toxicity, from a Republican perspective," Kathryn Lehman, a top GOP lobbyist and partner at Holland & Knight, who helped write the Defense of Marriage Act, told The Hill. She has been visiting dozens of Republican offices...