The only thing Trump's ban has in common with any Obama policy is the seven countries selected. Specifically no Obama policy ever had a religious test that gave preferential treatment to Christians. It never ceases to amaze me how many people fail to understand the different ramifications between US being seen by the world as at war with a limited number of non-state international criminals who practice Islam and  being in a religious crusade against all of Islam. All 1.6 billion of them. ISIS is pushing the crusade narrative. Trump's ham handed policy makes him the ISIS recruitment poster boy of the month.