All replication files and code for my published and forthcoming work are available on my Dataverse.

I am also involved in a number of large-scale, original and/or archival data collection efforts. You can read more about these projects below.
Developing World Refugee and Asylum Policy (DWRAP) Dataset
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The DWRAP dataset -- a collaborative effort with Guy Grossman and Jeremy M. Weinstein -- offers an original coding of national policies on forced displacement in the Global South. DWRAP includes data on 54 provisions across 229 national-level migration laws in 92 countries between 1951 and 2017. Construction of DWRAP expands the geographic and temporal scope of asylum policy indices considerably, and represents the most expansive coding of asylum and refugee policies in the developing world to date. The corpus of laws and policies pertinent to forced migration was identified chiefly using UNHCR submissions to the Universal Periodic Review (UPR), a mandated, cyclical review process of UN members states organized by the Office of the High Commissioner for Human Rights. We conceptualize refugee and asylum policy as a combination of policy provisions regulating five core dimensions: (1) access: the ease of entrance and security of status; (2) services: provision of public services and welfare; (3) livelihoods: the ability to work and own property; (4) movement: encampment policies; and (5) participation: citizenship and political rights.

Militant Group Alliances and Relationships (MGAR) Dataset
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The MGAR dataset -- a collaborative effort with Erica Chenoweth, Michael C. Horowitz, Evan Perkoski, and Philip B.K. Potter -- offers an original coding of cooperative and conflictual relationships between militant groups. MGAR includes data on the type and content of relationships between 2,613 militant groups from 1950 to 2016. In total, the data record 7,409 dyad-years in which a relationship exists between groups, significantly expanding the total number of relationships identified in other work. MGAR also captures when each relationship began and ended, and what it entailed. We provide a categorization of the nature of the relationship between groups, ranging from allies (the strongest form of cooperation) to associates, supporters, fans (verbal but not material support), hosts (primarily states), rivals, and competitors (the strongest form of conflict). For each cooperative dyad-year we further code whether the relationship included operational (e.g., shared membership, joint operations, tactical advising), material (i.e., arms transfers), territorial (e.g., shared bases), training, or financial support (i.e., cash transfers).
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Freedmen’s Education During Reconstruction (FEDR) Dataset
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In work with Breanna C. Gray, we are compiling digitized educational records of the Bureau of Refugees, Freedmen, and Abandoned Lands (i.e. Freedmen’s Bureau).  These data report the educational attainments of emancipated slaves in the Reconstruction-era American South, disaggregated by gender, subject, county, and month. FEDR data represent the richest existing portrait of educational initiatives undertaken during Reconstruction. In a series of projects, we use these data to study: (1) how the presence of occupation forces during Reconstruction affected African American engagement with Freedmen's Bureau schools; and (2) the political and economic legacies of education during Reconstruction.
​U.S. Coast Guard Migrant and Drug Interdictions Dataset
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Through Freedom of Information Act (FOIA) requests, I have obtained declassified, geocoded information on all maritime migrant and drug interdictions by the U.S. Coast Guard from FY 1995 through FY 2017. Data are available upon request.