American Training - It's Too Late
Why not train in an environment which does not require you to jump through all these ridiculous hoops just to enter the country?
Just the telephone call to arrange your visa appoinment is charged at a rate of £72/hour. (London).
All these charges, the bureaucracy, the outdoor waiting; it should be telling you something...
America is only worth visiting should you have access to a time machine.
Good luck anyway.