clinton and barack obama for rising premiums under obamacare but you saw this push and pull between donald trump trying to stay on the message. his advisors wanted him to hammer it home and fighting his gutt instinct to want to settle any fight with anyone who has criticized him. >> did you see where biden wants to take me to the back of the barn. me? he wants it. i'd love that. i'd love that. mr. tough guy. you know, he's mr. tough guy. he's mr. tough guy when he's standing behind a microphone. he wants to bring me to the back of the barn. oh. some things in life you would love doing. >> reporter: that was donald trump responding to a comment biden made. trump is back on the campaign