(S (S (S (BASENP (JJ U.S.) (NN security) (NNS officials)) (VP (VBP have) (VP (VBN cleared) (SBAR (S (BASENP (DT a) (NNP Delta) (NNPS Airlines) (NN passenger) (NN jet)) (VP (VP (VBD diverted) (PP (TO to) (BASENP (NNP New) (NNP Mexico)))) (S (VP (TO to) (VP (VP (VB take) (PRT (RP off))) (ADVP (RB again))))))))))) (SBAR (IN because) (S (QT (DQL ``) (BASENP (DT no) (JJ suspicious) (NNS items)) (DQR '')) (VP (VBD had) (VP (VBN been) (VP (VBN found))))))) (PERIOD .))