The debate around how to keep America safe and welcome newcomers is prominent. In the last year, cities and countries around the world, including Baghdad, Dhaka, Istanbul, Paris, Beirut, Mali and inside the United States - have been vulnerable to terrorist attacks and human tragedy. Meanwhile, the world faces the largest refugee crises since the Second World War.

This article is based on remarks delivered at Emory Law Journal’s annual Thrower Symposium on February 11, 2016. It explores how national security concerns have shaped recent immigration policy in the Executive Branch, Congress and the states and the moral, legal and practical implications of these proposals. Finally, this article examines the parallels between these proposals and immigration policies enacted after September 11, 2001.