I am really sorry for all the BS non-citizens have to go through at our airports (does "BS" translate to the UK?). We don't like it either. The government and the bureaucrats are not America. The people are. We are glad you are here from wherever, and being from the UK is particularly cool. I myself will approach anyone looking puzzled over guide book or map and offer to help, sometimes walking with them to their destinations and talking if it is on my way. If no one does that, you can ask nearly anyone if you are confused or need help. I hope things improve and you give it another go.