The naturalization process encompasses very little vetting other than a criminal history, time requirements, passing a test and attending the ceremony.

Those who are proponents of strict vetting at the time of entry into the U.S. are not fear mongering.  What emboldens the radicals is a lack of resolve to address the issue and a willingness of a large number of people who are either no longer shocked by radical Muslim terrorism or are simply willing to roll over on their backs and submissively expose their weak underbelly.  Weakness, not strength and resolve, is what emboldens them.