"I don't... the president hasn't to the best of my... I have not heard the president intone what he believes the constitutionality of the law is. I know that he believes the law should be changed.
Legal decisions around next steps in that case, I believe, will be made at the Justice Department and I would point you over there to them.
Again, the president believes, in this case, and the president believes in the case of don't ask, don't tell that those are laws that he has believed for quite some time should be changed."
--Robert Gibbs, when asked by Kerry Eleveld about Obama's view on the constitutionality of DOMA. Several gay bloggers have said that Obama shouldn't defend it because he said he thinks it's "discriminatory," but that isn't quite the same thing as "unconstitutional," which Obama's kept quiet about.