Trump just answered your thread:
1h
Donald J. Trump @realDonaldTrump
Everybody is arguing whether or not it is a BAN. Call it what you want, it is about keeping bad people (with bad intentions) out of country!
Just because President Trump is a craven coward, doesn't mean that I want to be. Terrorism is not an existential threat to my country. Not to say it isn't a problem, but the pinpricks that the terrorists have achieved in the past 15 years are not worthy of tossing out our proud traditions of compassion and treating each person on their own merits that Trump's EO has done. Besides if we're going to worry about terrorists, why weren't Saudi Arabia, the UAE, Egypt, or Lebanon, the source of the 9/11 hijackers, included in EO, especially Saudi Arabia. This isn't to say that terrorism isn't a problem, but at best Trump's EO does nothing to solve the problem, and at worst, he's handed the terrorists a major victory by showing how terrified our President is of them.