Fair points. I still find it hard to imagine they would use fuzzy profiling from social media though - if they want to cast a wide net like that, they could jus

Fair points. I still find it hard to imagine they would use fuzzy profiling from social media though - if they want to cast a wide net like that, they could just use country of origin - which is (one of) Trump's stated position(s), to shut down/more heavily regulate immigration from particular countries, rather than trying to go on a case by case basis. And they would avoid the bad PR that would come out of people getting to act on this pledge and other things like it.