candidates went another round. bush compared trurp to an actor and trump expounded on his 9/11 comments. we're following it all from right here in washington. >> well a lot of unique aspects of the 2016 race. the candidates at the helm. crowded landscapes and the twitter wars. one of the venues of republican rivals jeb bush and donald trump have been calling each other prophetic respectively. doubling down on his original comments that the world trade center towers came down on george w. bush's watch. >> i don't want jeb bush to say my brother kept us safe because september 11th was one of the worth days in the history of this country. i'm not thin skinned when something is truthful. if i did something wrong, i can handle that and if the press is bad. it's when people hit me when i didn't do anything wrong. you know, it's like then it's not a question of thin skin. i will fight back. >> and fighting back is exactly what jeb bush is doing referring to a two minute social ad media.