we're back now with tim scott and trey gowdy. they are the co-authors of a new book, unified. and let's talk about news of the day. we have learned that robert mueller has told president trump's legal team that he is the subject not the target of the mueller probe. is that significant and should the president sit down with robert mueller given that? >> i'll take that in reverse order. i think he should sit down with special counsel mueller. i think he is well positioned to answer some of the questions that the american people have. i don't think that those terms target versus subject -- only