Rage by Bob Woodward:
Trump was arriving. The orders were printed out and each put in a leather folder.
Byers finally looked at the second one, titled “Protecting the Nation from Foreign Terrorist Entry into the United States.” It was a travel ban preventing people from seven majority-Muslim countries from entering the United States.
Six months earlier, as a civilian, Mattis had publicly criticized candidate Trump’s proposed ban on Muslim immigrants. In the Middle East, Mattis had said, “they think we’ve completely lost it. This kind of thing is causing us great damage right now, and it’s sending shock waves.”