US president intervenes in UK EU referendum debate
Speaking at the start of a three day visit to the UK, he said,
“Let me be clear: ultimately this is something the British voters have to decide for themselves.”
"As part of our special relationship, part of being friends is to be honest and to let you know what I think, and speaking honestly, the outcome of that decision is a matter of deep interest to the US, because it affects our prosperity as well."