User Wik is intent on trying to claim that people from the United States are "U.S.", not "American". I have backed off on almost every argument that I've been involved in since I came to Wikipedia, but I can't see backing off on this. It is offensive to me to have my nationality minimized like this, as if I don't have the right to call myself what I feel I am. "U.S." is not the correct term to use to describe people and institutions of the United States.