Glick, whose father died in 9/11 said this to Bill O'Reilly:
Our current president now inherited a legacy from his father and inherited a political legacy that's responsible for training militarily, economically, and situating geopolitically the parties involved in the alleged assassination and the murder of my father and countless of thousands of others.
Since then O'Reilly has repeated that Glick said 'Bush was responsible for 9/11' - defending his treatment of Glick on his show.
from the above link: Glick claimed he "inherited a legacy" that is responsible for the terrorist attacks, not that he was (as O'Reilly put it) "directly responsible" for them.
It's the same kind of tricks that Hannity and Limbaugh and all the rest play.