Some of America's most senior politicians have written to Barack Obama ahead of the EU referendum telling him his decision to "pressure" the UK into backing Remain was "misguided".

In a letter to the President, 11 Republican Congressmen attacked his decision to warn that Britain would go to the "back of the queue" in any trade deal negotiations with America if it backs a Brexit.

Signatories include Mac Thornberry, the chairman of the Armed Services committee, and Devin Nunes, the chairman of the intelligence committee.