He reviewed the document with Orszag issue by issue, rejecting some proposals worth billions of dollars, and explaining that the budget resolution could not pass the Senate as written.
The foreign secretary said there had been seven formal discussions as well as many other conversations and written exchanges with Ecuador in an attempt to reach an acceptable resolution.
Fifa's Dispute Resolution Committee will decide on Obi's future, after they have received written submissions from Lyn, Manchester United and the player - who is represented by London law firm Russells - by Friday.
Former Attorney General Lord Goldsmith, who admitted his view changed about the necessity for a further UN resolution legitimising military action in the run-up to the conflict, has been asked to give further written information.