It is expected by Daily Telegraph to announce a Brexit position at approximately 5:00 EST so check back in about eight hours for tons of reaction.
RFI = Radio frequency interference.
It appears he is backing the Brexit move.
Here is how the cabinet’s positions are seen:
http://cf-particle-html.eip.telegraph.co.uk/a3c3f969-5ed4-4f76-a63b-0550d91479d0.html
I wouldnt think there will be any impact on the US election at all. There might be a question at a debate, but its hardly an issue that will divide candidates.