Story broken by The Sunday Times under the headline "Revealed: US Double-talk on Lockerbie". (subscription access to their on-line site). Reported all over the place, eg by the BBC: BBC News - Alex Salmond calls for release of Lockerbie files The story seems to be that: 1) Tony Blair's "deal in the desert" advanced Anglo-Libyan relations, including creating the prisoner transfer scheme and advancing British trade interests. And yes BP lobbied - but everyone knows this. This is above-board business practice. 2) Megrahi was eligible under this agreement for transfer to a Libyan gaol. The letter leaked to the Sunday Times makes it clear that the White House directly lobbied for Megrahi to be released on compassionate grounds rather than transferred to gaol in Libya. Depending on which report you read it is the White House, the President or the USA which did the lobbying for the compassionate release of Megrahi. But if this letter is genuine - and I don't think there is really any doubt - then Obama either directly lobbied for the release on compassionate grounds or allowed others in the US to do the lobbying. The US Ambassador to the UK has accepted (on television) that at the present time there is no evidence to link BP with the Megrahi release.