Census results determine, among other things, congressional redistricting and the amount of federal money states and municipalities get from the government. Why should states be awarded for harboring illegal immigrants? Counting illegals is simply wrong, and skews the results. It can affect the congressional representation of legal citizens. The entire system is corrupt, and the Census Bureau is nuts.
And I would say that it absolutely does.
Does the Constitution REALLY require the Census Bureau to count non-citizens in the census?