The big push came with Clinton, but we had 8 years of silence on the issue under Bush. Recall that DADT repeal was passed with a big majority in a Republican controlled House.
Hard to know who the real enemy is anymore.
Start with the House Republicans who voted for the DADT repealer. They took the queer money and voted against their constituents.
ACTUALLY it was passed during the lame duck session under Pelosi's watch. The ONLY was it could have been stopped is IF the few RINO Senators had supported the conservatives and blocked the faggotizing of our military; HOWEVER, all the usual suspects let it through....