Today on 1/27/17 Trump closed America’s doors to refugees indefinitely, banned immigrants from several countries, suspended the Visa Interview Waiver program, and effectively left untold numbers of people stranded–including those with Green Cards and especially those with no where else to turn who had already been approved to come here.
It is not a ban purely on Muslims, just on people born in specific (majority Muslim) countries, so there’s a chance it could hold up in court.
He signed this executive order on Holocaust Remembrance Day. Even if he didn’t understand the significance of that, I have no doubt Bannon and the other nazis on his staff did.