perhaps because they're impossible to find with AB's search engine. Basically, you only have to admit to crimes involving moral turpitude or I think drug use. I don't think your offence counts as either one. So just fill out the green visa waiver form they give you on the plane and tick 'no' to the question about criminal records. Make sure all your documents are in order and there are no letters referring to your conviction in your luggage, because you might get searched (can happen to anyone).