U.S. President Barack Obama signs the Don't Ask, Don't Tell Repeal Act of 2010 in Washington

 
U.S. President Barack Obama signs the Don
U.S. President Barack Obama signs the Don't Ask, Don't Tell Repeal Act of 2010 at the Department of the Interior in Washington, December 22, 2010. Obama on Wednesday signed a landmark law to allow gays and lesbians to serve openly in the U.S. military for the first time, but it could be many months before a move some top officers warn may endanger troops will finally take effect. REUTERS/Jim Young (UNITED STATES - Tags: POLITICS MILITARY)