It is both. There is a dependency in the sense of us going to China necessitated her getting the stamp. But if she wants to leave the U.S. to any country, Canada for example, and return to the U.S., then she needs to go back to China to do the stamping process to enable that. So it's basically required unless you want to just stay in the U.S. for multiple years straight, which is unlikely for international people and also for people in general that like to travel.