I've never had an issue with US border controls. My schedule has me in and out about every other week and found them very easy to get along with. A scan of the passport, smile and maybe a joke and we're on our way. Some of our crew don't even use passports and show drivers licences (if you are reading this better get one as the deadline is approaching). It's their country and the Americans can do whatever they deem required to keep the place safe. Since I live next door I'm fine with that.