So why doesn't "French" sovereignty account for the difference? Why doesn't "Spanish" sovereignty account for the Difference? Why are "Indian" nations treated completely different from the offspring of all other nations?
There are only two explanations as to why someone would proffer your claim above. Intellectual Dishonesty, or astonishing ignorance. I routinely point out that the standard used for "Indian" Nations applied to NO OTHER NATIONS. Yet, people simply ignore this brutal refutation of their argument, and continue repeating it.
The unmitigated truth is that "birth on the soil" citizenship is NOT supportable by our history. One must do astonishing logical backflips to argue that it is, as demonstrated by your "Indian Sovereignty" argument above.
As far as sovereignty goes, Spain and France are not located within the geographic boundaries of the United States, unlike Indian nations.
The US has had special treaty relationships with the indigenous peoples born on the land that was to become the United States of America that go back to the time before the Revolution and the Articles of Confederation. Because of the treaty and statutory status of American Indians, they were considered as not being born “subject to the jurisdiction thereof...” if a person was born on a reservation and was an enrolled member of a tribe or nation.
The Supreme Court decision to exclude John Elk from US citizenship in Elk v. Wilkens in 1884 was rendered moot forty years later by the Indian Citizenship Act of 1924:
“BE IT ENACTED by the Senate and House of Representatives of the United States of America in Congress assembled, That all non citizen Indians born within the territorial limits of the United States be, and they are hereby, declared to be citizens of the United States: Provided That the granting of such citizenship shall not in any manner impair or otherwise affect the right of any Indian to tribal or other property.” Approved, June 2, 1924. June 2, 1924. [H. R. 6355.] [Public, No. 175.] SIXTY-EIGHTH CONGRESS. Sess. I. CHS. 233. 1924.”
Signed into law by President Calvin Coolidge on June 2, 1924.