It was NEVER intended to be about taxation. It was only about representation. So if you are not a citizen, why would we want to count you?
Exactly! All these states that have packed their cities and towns with extra illegal bodies don't want them counted as non-citizens because it will impact how many people they can send to Congress. California has lost a lot of citizens only to be replaced with a lot of illegal residents- it is very likely with a census that counted actual citizens, California would lose a congressional seat.