Definitely this, but also bringing refugees in gives you:

cheap / free / sellable (labor trafficking) labor

A victim class for Americans to feel luckier than so they are less inclined to notice the country being stolen by TPTB

A group for Americans to be angry with- history shows that you push tribes together that don't agree (but would otherwise live peacefully apart) they will eventually fight. There you get your ww3 and an excuse to kill and minimize the population.

Bring in refugees and stir up fake trouble (just like at trump rallies) cause crimes against/or by muslims (in this case) to scare the people and make them docile to, or even better; crying out for more regulations, more protection, more government intervention.. like Rosie O'Donnell tweeting for martial law against trump.. TPTB are trying very hard to make everyone fight everyone else so we don't gather together and fight them.