Immigration policy in Trump’s America
Development Seminar @ Brookings India: Immigration and its Discontents
The battle over the border: Public opinion on immigration and cultural change at the forefront of the election
The [Trump administration's] proposals don't call for constant monitoring once someone is in the country. It seems like [Saipov, the NYC attacker] became much more radical relatively recently. So the ideas on the table don't seem particularly relevant to this attack.