Who's the ONE person in Washington, DC who's above reproach?

Democrats. Republicans. Lobbyists. Journalists. They all get slagged (and rightly so) in Mark Leibovich’s new book, This Town. It’s about the Washington, DC scene, and apparently could be subtitled "A well-written guide to the worst people in America." 

So, does ANYONE avoid coming out looking like a venal hypocrite? According to Alex Pareene of Slate, yes:

Strangely, one person who comes out fairly well in the book is Barack Obama, who is both barely present and also inescapable. Obama genuinely hates [Washington, DC]. It is a sincere and unflagging hatred. Many of his staff happily sold out, obviously, taking lobbying jobs and media gigs and massive speaking fees, but the president clearly has nothing but contempt for the entire city and its self-important longtime fixtures. He hates Politico, hates old Clinton hangers-on, hates the parties, hates it all. And he should!