Tens of thousands are expected to gather at the U.S. Capitol
The Senator avoids answering questions about his position on same-sex marriage
Vice President says administration 'made it clear' it should be done
LGBT immigration group 'extremely disappointed' with proposal
Targeting referenda fights, swing states
GOP candidate accepts party's nomination in convention speech
Activists want to repeal ban on PEPFAR funds from going to sex workers
Five potential candidates have records hostile to LGBT rights
President announces hike In AIDS drug assistance program
