road again. he's formally declared he's forming a presidential exploratory committee. i talked to him this afternoon about his run and about his new book "liberty defined -- 50 essential issues that affect our pree dom." surprisingly, he told me republicans are wary of running against president obama because of his popularity. why are so many republicans apparently hesitant to get into this race from haley barbour to senator thune to mike pence. strong candidates with ideologies that are well defined. a president who is below 50 in the approval ratings, which is sort of the normal threshold.