There are loads of people looking to make money on the fears of the many.... be cognizant of that and avoid the attempts when you can.
There are also people talking out of their asses (Giuliani, Goebb...eerr Conoway)
And Pizza the Hut (Bannon) and Pencil Necked Geek (Miller) got to go.
Still, its not a Muslim ban.
Its off the back of Congressional designation that those nations can not be confidently vetted due to the lack of procedures in place.