This source says that California gets 6 electoral votes
and 6 seats in the House of Representatives
based on counting of illegal immigrants in the 2000 census.
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http://www.fairus.org/issue/illegal-immigrants-distort-congressional-representation-and-federal-programs
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Thats how i read that chart. Looks like 6 more house seats 2000 census. 2010 census? Don’t know.