To follow up on Julie's post:
this new article in
The Atlantic, about how Trump is building an autocracy, says a lot about his mixing of personal business interests and national politics. Add to that the information in
this Guardian article about why Steve Bannon "wants to destroy secularism" and you get the current immigrant crisis.
Btw, notice that the Administration timed the announcement of Bannon's role in the National Security Council to coincide with the one about Muslim countries. The latter attracts much notice and uproar, while Steve B. slips in the back door.