The chairman of the Joint Chiefs of Staff on Tuesday used Twitter to restate his position that gays and lesbians should be allowed to serve openly in the military.

At a congressional hearing, Adm. Mike Mullen said he believes repealing the 1993 law is the "right thing to do." Minutes later, Mullen tweeted, saying that he stands by what he said:

Stand by what I said: Allowing homosexuals to serve openly is the right thing to do. Comes down to integrity.

Mullen's words represent the strongest statement to date by a top military official in support of the repeal.

Hearings on "Don't ask, don't tell" comes almost a week after President Barack Obama called for a prompt reversal of the policy during his State of the Union address.

Vice President Joe Biden on Tuesday said he expects the military to lift the policy by year's end.