The US has more than double the number of a/c than the rest of the world COMBINED
True and the FAA always resisted changes to ICAO based on that argument. The problem is that for many years only a tiny proportion of those aircraft were travelling outside the continental US , but now things are changing , and when they do go outside , it causes problems. Also the number of foreign aircraft /pilots entering continental US airspace is increasing. Time to wake up, and to be fair I think the FAA do realize they have an issue now,and plan to tackle it. At this this is what I hear.