It doesn't define a lot of things; treason's the only crime defined, for example, but we knew a whole bunch of others existed on day one. It does clearly imply

It doesn't define a lot of things; treason's the only crime defined, for example, but we knew a whole bunch of others existed on day one. It does clearly imply a difference between "natural-born" citizens and naturalized ones, and that citizens and residents/people/persons aren't the exact same thing. The choice to use "citizen" in some spots and "person" in many others seems very deliberate.