Seems you're the one who's ignorant of basic facts. Since the Constitutional apportionment of U.S. representatives is based on "counting the whole number of persons in each State, excluding Indians not taxed," and not just citizens -- you just blew up your own reason for why we should add that question to the census.
And why were the Indians not included in the count?
It was because
THEY WERE NOT CONSIDERED CITIZENS. At the time, Indians were not considered citizens, and it really wasn't anticipated that there would be any significant number of other persons in the country that were not citizens, aside from slaves who fell under the Three Fifths compromise.
Dumbfuck, Indians who were taxed were counted; and until 1924, they were not U.S. citizens if they were born on an Indian reservation.
So yes, non-citizens are among the "persons" counted for apportioning representatives.
You brain-dead cultists have no ******* clue about civics.