They should be counted for the census. They should not be included for congressional apportionment.
They should be counted for the census because census figures are used for myriad purposes other than apportionment. It is kinda, sorta important to know how many people actually live in a given area.
Congressional apportionment, however, should be based on citizens.
There has been a posting on a conservative site about how illegal immigrants give the Democrats additional seats (14 ?), even if none of the ill
egals were to vote.
https://cis.org/Oped/Immigrants-already-tip-scales-US-elections-without-even-voting
Not if they are counted the same as citizens. If they were labeled properly, i.e., illegals, transients, visitors, etc. and counted separately then titled in with citizens fur accounting purposes, maybe. That is a big maybe.