Presumably, if I adopt a child overseas, that child becomes an American citizen. What if I adopt an adult?
"Regardless of what you think, it is both legal and possible to adopt yourself a healthy, bouncing grownup. In many cases, your new, adult family member must simply be a legal adult and voluntarily agree to the adoption."
https://www.legalzoom.com/articles/can-you-legally-adopt-an-adult
"Regardless of what you think, it is both legal and possible to adopt yourself a healthy, bouncing grownup. In many cases, your new, adult family member must simply be a legal adult and voluntarily agree to the adoption."
https://www.legalzoom.com/articles/can-you-legally-adopt-an-adult