Just in case, you guys need visa to go to USA. Try to go to embassy by yourself, or ask to travel agent to do it for you. DO NOT GO TO CHINA VISA (LOCATED IN 1620 SCOTT STREET). Especially the lady, I think she is the owner (not sure).Me and my friends saw her checking people passports(but at that moment she is alone) and writing down something on a piece of paper.When we walked to the counter, she put away all the passports and the paper. So, we guess she is writing down something from those passport.