cnn's investigation correspondent is in our washington bureau. chris, it just keeps on coming. >> it does, deb. this fight between donald trump and hillary clinton is getting a little personal with the billionaire attacking bill clinton for sexism, he said the tweet attacking bill clinton's penchant for sexism turned the tables on hillary clinton because she used the same phrase to criticize trump earlier in the week after he used a sexist vulgarity to explain clinton's loss to obama in 2008. >> he is fair game because his presidency was considered to be very troubled to put it mildly, because of all of the things she's talking to me about. she's mentioning sexism. i turned her exact words, i turned her exact words against her from that standpoint and she's got to be careful. it's got to be fair and we all have to fight fairly and have to fight for the good of the country, for the good of the people and good of everybody but