Complex sentence: The wording of Proposition 8 was precisely the same as that which had been found in Proposition 22, which had passed in 2000 and, as an ordinary statute, had been invalidated by the State Supreme Court in 2008.
Split into simpler sentences: The wording of Proposition 8 was precisely the same as that which had been found in Proposition 22, which had passed in 2000. As an ordinary statute, that law had been invalidated by the State Supreme Court in 2008.