13 minutes after the hour now. donald trump and jeb bush are each on the attack again. the time the republican front runner took shots at george w. bush's record on -11. first look at this exchange of the bloomberg interview. >> you talk about george bush, say what you want, the world trade center came down during his time. >> hold on, you can't blame george bush for that. >> he was president. don't blame him, don't blame him. he was president t. world trade center came down during his reign. >> jeb bush fired back with this tweet, how pathetic for donald trump to criticize us for 9/11, we were attacked. my brother skept kept us safe. s he was asked about his comments in massachusetts. watch this something you maybe have never seen. >> mr. trump, can you clarify, do you think that 9/11 was problem's fault?