Maybe it refers to US nationals as opposed to US citizens. For example, the people of American Samoa and Guam are US nationals but not US citizens, at least not

Maybe it refers to US nationals as opposed to US citizens. For example, the people of American Samoa and Guam are US nationals but not US citizens, at least not automatically. But I don't know what all the differences between the two categories are. Reference: https://www.youtube.com/watch?v=CesHr99ezWE https://www.youtube.com/watch?v=CesHr99ezWE