(S (S (PP (IN On) (BASENP (NNP September) (NN 26))) (COMMA ,) (S (NP (BASENP (NNP United) (NNPS States) (NNP Representative) (NNP Duncan) (NNP Hunter)) (PRN (LRB -LRB-) (BASENP (NNP R-Calif) (PERIOD .)) (RRB -RRB-))) (VP (VBD introduced) (NP (BASENP (DT a) (NN bill)) (S (VP (TO to) (VP (VP (VB prohibit) (NP (BASENP (JJ federal) (NNS grants)) (PP (TO to) (BASENP (NNP Columbia) (NNP University))))) (PP (IN in) (NP (BASENP (NN response)) (PP (TO to) (NP (BASENP (NNP Columbia) (POS 's)) (NP (BASENP (NN decision)) (S (VP (TO to) (VP (VB allow) (S (NP (BASENP (NNP Iran) (POS 's)) (BASENP (NNP President) (NNP Mahmoud) (NNP Ahmadinejad))) (VP (TO to) (VP (VB speak) (PP (IN on) (BASENP (NN campus))))))))))))))))))))) (PERIOD .))