These fatwas and Mullahs' version of Islam is the problem.  Most of the Mullahs are not spiritually enlightened.  They preach a distorted version of Islam to their congregation.  They have brainwashed their congregation in the sense that the audience is not supposed to ask any question or clarification of Mullahs' statement.  Hence, the audience is not using their brain to question and  analyze what the Mullahs' say in their sermons.  First thing Mr. Trump do is to deport all illegal Muslims from the USA that includes even the legal Muslims whose identity has been established as a follower of ISIS ideology.  Since, Mosques are the breeding and training grounds for the future martyrs, strict surveillance ought to be made as a mandatory condition.  Thirdly, no more construction of Mosques in the USA.  Fourthly, the Mosques which have been proven and known to the officials as the breeding found of fundamentalists should be closed for ever and clerics should be deported.  Lastly, any donation coming to any of these mosques from overseas should be monitored and stopped this funding.