It's not a bad analogy, given that 13% of Syrian refugees admit they
have a positive view of ISIS. However, the root problem isn't bad people,
but bad ideology. Radicals recruit from the mainstream - so a larger
pool of Muslims in the U.S. means more dead Americans (in addition to
the irreversible social strain that accompanies a growing Muslim minority).
While we do not agree with a total ban on Muslims, Trump's point is that
mass migration is an unnecessary risk (he favors safe zones, instead).
Muslim migration to the U.S. resulted in the deaths of 63 people and injuries
to another 118 in just this past year. What benefit outweighed that cost?
http://www.thereligionofpeace.com/