There was no ISIS until Obama withdrew the reserve force from Iraq. And there was no ISIS until the Turks, Saudis, and Obama State Department decided to topple Assad.
The current map of the middle east is thanks to Obama and the Turks. Bush left quite a different map.
Bush was not perfect by any means. But his administration was not as completely infiltrated by Muslim Brotherhood in the way that the current one is, though in truth it was well on the way to being infiltrated.
Bush/s enormous failure was not looking at the bigger picture...he was sap-happily duped by the pukeneos. He never figured in the horrific consequences about what would happen if strongmen Saddam and Khadadi were deposed.
Bush overlooked the conniving Mideast mindset and its capacity to do great harm to the US. Bush had this flawed vision of Arabs dancing around the Maypole after the US brought them the glories of democracy.
Bush relied too heavily on the pukeneos.....who may or may not be in league w/ the M/B themselves. The pukes agenda does not include the best interests of the USA. They are political whores who will get in bed w/ anybody that serves their hidden agenda.