Barack Obama
The U.S. Senate has refused to repeal the military policy "Don't Ask Don't Tell" which prohibits homosexuals from openly serving in the military. Gay rights groups petitioned for its repeal, demanding the President, via his Department of Justice, strike it down in court, but their efforts were in vain, as all involved refused.
Military management, past and present, released reports stating, allowing gays to openly serve would affect cohesion and during a time of war. Many soldiers surveyed are against the repeal as well. The ban was enacted by former President Bill Clinton.