(S (S (NP (BASENP (NNS Opponents)) (PP (IN of) (BASENP (DT the) (NN change)))) (VP (VBP state) (SBAR (IN that) (S (BASENP (JJ recent) (NN legislation) (NN blocking)) (VP (VBZ is) (NP (BASENP (NN part)) (PP (IN of) (NP (NP (NP (BASENP (DT the) (NNP Caucus) (POS ')) (NNS efforts)) (S (VP (TO to) (VP (VB push) (PP (IN for) (BASENP (JJ comprehensive) (NN immigration) (NN reform))))))) (COMMA ,) (VP (ADVP (RB not)) (VP (VP (VBN seen) (PP (IN in) (BASENP (DT the) (NNP U.S.)))) (PP (IN since) (BASENP (DT the) (JJ early) (NNS 1980s))))))))))))) (PERIOD .))