The English Language says so.
Congress defined citizenship.
Again, look at any passport application.
If I wanted a dodge, I would go to a car dealership. Cite a LEGAL source.
“Congress defined citizenship.”
Congress has Constitutional authority to define the naturalization process. The Constitution, through the 14th Amendment, defines a citizen of the US.
A Natural born citizen must be native born and cannot be required to swear an Oath of Allegiance because allegiance is a natural or implied without reservation. Not all native born persons are Natural born citizens because some are born with dual allegiance or their allegiance to the US requires an affirmation before doubts are resolved.
Obama’s campaign made a big deal of Obama’s Kenyan citizenship obtained in 1963 expiring because he did nothing about it. In fact, Obama should have affirmatively renounced his Kenyan citizenship at the age of majority to secure his allegiance to the US.