NEW : President tweaks GOP hopefuls over debate incident . Obama says he will continue to advocate for equality . Romney responds by saying the president is "playing politics with our military and veterans" Score: But some critics say he has done too little to advance same-sex marriage .
NEW : President tweaks GOP hopefuls over debate incident . Obama says he will continue to advocate for equality . Many gay rights activists applaud Obama 's track record . But some critics say he has done too little to advance same-sex marriage .