Thanks for the posts guys, tho I've tried to get info from the embassy they haven't been very helpful. With regards all the comments regarding a US visa, you do not need a visa to visit the states. The visa wavier is all you need and as listed drink driving is not a crime of immoral perp. ie) fraud, drugs etc. I know because I went through the process before. However if u require a visa for say flight training, you do require a visa and all you have to do is get a medical from a US embassy registered doctor then bobs your uncle, you have it.