JOHN MCCAIN seems deeply unhappy with Barack Obama:

Dear Senator Obama:

I would like to apologize to you for assuming that your private assurances to me regarding your desire to cooperate in our efforts to negotiate bipartisan lobbying reform legislation were sincere. When you approached me and insisted that despite your leadership’s preference to use the issue to gain a political advantage in the 2006 elections, you were personally committed to achieving a result that would reflect credit on the entire Senate and offer the country a better example of political leadership, I concluded your professed concern for the institution and the public interest was genuine and admirable. Thank you for disabusing me of such notions.

Ouch. Read the whole thing. (Via Austin Bay). I don’t know who’s right on this — if McCain’s lobbying reform legislation is anything like his campaign finance “reform” legislation, I’d side with Obama. But writing — and publicizing — a letter like this (it’s on McCain’s website) is quite unusual for the Senate.

UPDATE: Obama responds.