Putting TRAC to Work
  Legal and Scholarly
National Bureau of Economic Research
April 2019

The Political Economy of Immigration Enforcement: Conflict and Cooperation under Federalism
By Albert Ciancio and Camilo Garcia-Jimeno

Our data on the immigration enforcement pipeline comes from two main sources. First, a serie sof Freedom of Information Act (FOIA) requests to DHS, from which we obtained data from the Secure Communities program at the county level, covering the period October 2008 to February 2015. These detailed data include the number of fingerprint submissions from local detention facilities, the number of matches to the DHS’s IDENT database, the number of detainers issued by ICE, the number of individuals in ICE custody, the number of removals, and the ICE level of priority based on crime severity. For our purposes, we will consider level 1 as serious crimes, and levels 2 and above as minor crimes. We use the number of fingerprint matches as our measure of local arrests of unlawfully present individuals. Second, we collected data from the Transactional Records Access Clearinghouse (TRAC) at Syracuse University. Based on several FOIA requests, TRAC has built updated record-by-record datasets of detainers, removals and Secure Communities removals with information from 2002 to the present. All datasets have information on the most serious crime conviction, priority level for ICE, country of birth, age,and sex of the immigrant......[Citing TRAC research].

Transactional Records Access Clearinghouse, Syracuse University
Copyright 2019
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