Islam in all its facets is a threat to THE PEOPLE of the U.S.A.
There is no moderate Islam. Embedded in Islam is the commandment to kill the infidels who do not convert to Islam. If not willingly, then by force, if not by force then infidels must die a torturous death.
Who are the infidels? Anyone who do not follow Islam. By default, most Americans have been condemned by Islam to a horrible death. Do we need to import more radical militants of Islam to the USA? Do we need a TROJAN horse?
"Syrian Refugees" can not be properly screened. And even if they are screened, Islam doctrine teaches covert methods to blend in and pretend they are "moderates" until they can overtake and overpower the people that have welcome them.
Is Islam a religion of Peace? No it is a TROJAN horse.