Stafford Smith tells Obama he should be aware of the "bizarre reality" of the situation. "You, as commander in chief, are being denied access to material that would help prove that crimes have been committed by US personnel. This decision is being made by the very people who you command."
It is understood US defence officials might have censored the evidence to protect the president from criminal liability or political embarrassment.
The letter and its blanked-out attachment were disclosed as two high court judges yesterday agreed to reopen the court case in which Mohamed's lawyers, the Guardian and other media are seeking disclosure of evidence of alleged torture against him. Mohamed's lawyers are challenging the judges' gagging order, claiming that David Miliband, the foreign secretary, changed his evidence.
In a judgment last week, Lord Justice Thomas and Mr Justice Lloyd Jones stated repeatedly that Miliband claimed the US had threatened to stop sharing intelligence with the UK if information relating to Mohamed's alleged torture was disclosed. Miliband subsequently denied the US had applied such pressure. The case will be reopened next month.