Whistleblower soldier Bradley Manning decided to announce that he wanted to live as a woman the day after he was sentenced because a military prison said it would not provide hormone treatment, his lawyer said.
David Coombs said Manning, who now wants to be known as Chelsea, had known for a long time he would make such a statement, but "she wanted, essentially, for the media surrounding the trial to dissipate".
Manning did not want people to think the statement was insincere. "People might think it was an effort to get further attention," said Mr Coombs, of Providence, Rhode Island.
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The Prime Minister said Parliament will be given a binding vote on the final deal, but said the result will not stop Britain leaving the EU.
Officials from the train drivers' union Aslef will meet managers from Southern Railway, whilst the RMT will meet separately with Acas.
Last week the organisation wrote on Twitter: "If Obama grants Manning clemency Assange will agree to US extradition".