Gay rights advocates expect Congress will soon move closer to approving a federal ban on job discrimination against gay, lesbian and transgender workers. Rep. Barney Frank, a leading proponent, predicts the ban will win House approval in coming weeks. But he and other gay rights supporters are less optimistic about the fight ahead in the narrowly divided Senate, where they would need 60 votes — rather than a simple majority — to overcome anticipated GOP stall tactics, such as a filibuster. "You don't know if anything can pass the Senate," said Frank, D-Mass., one of two openly gay members of...