(S (S (BASENP (NNP U.S.) (JJ federal) (NNS laws)) (VP (VBP forbid) (S (VP (VBG drawing) (NP (BASENP (JJ congressional) (NN district) (NNS boundaries)) (SBAR (WHNP (WDT that)) (S (VP (VBP dilute) (BASENP (NN minority) (NN voting) (NN strength)))))))))) (PERIOD .))