America started ISIS dumbass. Once again, America invades the Middle East, destabilizes an entire region, created a power vacuum that gives ride to ISIS then just ditches the problem they created. Theres a reason why the vast majority of the world views America as a greater threat to world stability than either Iran or North Korea
Daesh was formed in Syria by an al-Qaeda splinter group after the US had left Iraq. The actions of Bush and Obama may have been a causatory factor, but the ultimate responsibility for Daesh's action rests with Daesh themselves.