Centrist Sen. Ben Nelson (D-Neb.) said Wednesday he opposes a legislative effort to repeal the "Don't ask, don't tell" policy against gays in the military.

Nelson, who sits on the Senate Armed Services Committee, told the gay and lesbian Washington Blade that he wants to wait until the Pentagon completes its review of the policy before voting to get rid of it:

Asked whether he would vote in favor of a repeal measure, Nelson replied, “No, I want to follow with the advice and the suggestions of Secretary of Defense [Robert] Gates to have the study that is underway right now before we make that final decision — because it’s not a question of ‘whether,’ it’s a question of ‘how.’”

Nelson's comments could make it more difficult for lawmakers on the Armed Services Committee to approve a repeal.

Some on the panel are considering attaching a measure to next year's defense authorization bill that would repeal the policy. President Barack Obama said in his State of the Union address that he supports nixing "Don't ask, don't tell," and Vice President Joe Biden later said he wants it done this year.

Proponents of the repeal in Congress, however, have expressed dissatisfaction with the administration's handling of the process. Earlier this year, Defense Secretary Robert Gates announced a year-long review of the policy, which bans openly gay people from serving in the military. 

Sen. Carl Levin (D-Mich.), the chairman of the Armed Services Committee, has said that he could support a vote on repeal now, but to delay its implementation until 2011, when the review will likely be completed.