If ever you wanted an example of the difference between Gordon Brown and David Cameron as Prime Minister, look at what's happening in Washington.
Brown and his Ministers cow-towed to the Americans over the one-sided extradition treaty and refused even to raise the subject of Gary McKinnon with their American counterparts.
On his first visit, Cameron raised it with Obama, and if reports are correct, has got the Americans to agree that he can serve half his sentence in Britain. That is still not enough, but it's far more than Brown got - mainly because he didn't even try as he thought that by merely mentioning the issue would harm US-UK relations.
Cameron has shown real leadership. He should now go further and renegotiate the extradition treaty so both sides operate on an equal basis.