>> don't blame him or don't blame him but he was president. the world trade center kacame dn during his reign. >> a response to one of his passionate moments. >> such a disaster abraham lincoln couldn't have been elect elected. >> you know what? as it relates to my brother, one thing i know for sure, he kept us safe. >> reporter: trump is even suggesting he could have stopped the 9/11 hijackers from getting into the u.s. in the first place. >> i'm extremely tough on people coming into this country. i doubt those people could have come in the country. >> reporter: for the record, the 9/11 commission said two of the 19 hijackers over stayed visas but others gained the immigration system and commission said the attack was a shock but should not have come as a surprise. still, jeb bush's campaign thinks trump's latest rant handed them a winning issue. >> next week mr. trump will say fdr was around when japan attacked pearl harbor.