Have you tried the Office of Personnel Management's USAJobs site? That's where all the federal listings are. As for non-federal, you'd have to check the Washington Post and the like. I'm sure there's a constant need - one of the things this town is not short of is lawsuits! - but I'm not aware of any immediate openings here (but then again, this is only my second day at work and really the first when I've gotten anything done).