1. Office of Immigration Statistics, Department of Homeland Security, Washington, DC, 20528, USA.
2. Immigration Policy Lab, Stanford University, Stanford, CA 94305, USA.
3. Department of Government, Dartmouth College, Hanover, NH 03755, USA.
4. Department of Political Science, Stanford University, Stanford, CA 94305, USA.
5. Graduate School of Business, Stanford University, Stanford, CA 94305, USA.