husband's situation, okay. and that is now the biggest story on television. >> reporter: voters in south carolina say those attacks are fair game. >> he's telling the truth. i mean, you know, there's a history of bill clinton being aggressive in a way he's talking about. >> reporter: trump's rivals still stumped on how to take down the gop front-runner. in the meantime turning on one another. john kasich putting out a video painting jeb bush as a candidate of the past. while marco rubio turns on chris christie. >> chris christie's a funny guy, but he's never in new jersey. he's gone half the time. >> reporter: with the rest of the field tearing into each other, trump is using his iconic hairdo to tear into president obama's environmental agenda. >> you can't use hair spray. because hair spray is going to effect the ozone. let's see, i'm in my room in new york city. and i want to put a little spray