Hey there!
Here are your answers:
The proper answers to this question is:
1. These people are called "immigrants".
2. These people live in different countries and was imported to America these countries include: Asia, Europe, Australia, Africa, South America, and Antarctica.
3. Most immigrants that come from different countries dont have citizenship because they would have to live in America for sometime or would have to be born in America in order to become or be a citizen since how they were citizens in there country they have no rights, or not citizenships intill proven to be on by using the requirements in order to become one.
If you need anymore help feel free to ask me!
Hope this helps!
~Nonportrit