I would suggest contacting Darren at Physio America. He is a UK trained physio who now lives and works in the USA and is skilled at helping UK graduates seek USA employment.
He can be contacted directly from our USA assist link on PhysioBob's Jobs http://www.physiobob.com/assistance.aspx?iAssistID=7
I also noticed that he will be at this years CSP annual conference as an exhibitor.
Best of luck