welcome back. we've been hearing from the candidates tonight as they try to put their own spin on their performance at the cnn debate. we are expecting to hear from more candidates. rand paul and donald trump clashing own internet monitoring and isis. >> when you ask yourself, whoever you are that thinking you're going to support donald trump, do you believe in the constitution? are you going to change the constitution? >> mr. trump? >> so -- they can kill us. but we can't kill them. that's what you're saying. and as far as the internet is concerned i'm not talking about closing the internet. i'm talking about parts of syria, parts of iraq where isis is, spotting it, not you could close it. what i like even better than that, is getting our smartest and getting our best to