The Effect of Sanctuary (estimating the effect of state and county sanctuary policies on  deportations).

Reviewing Administrative Review (evaluating whether systems of review and appeal in immigration and Social Security effectively cabin the discretion of administrative judges).

Policing Police (with Dorothy Kronick) (comparing effects of constraints on arrests/stops in Venezuela, Chicago and Colombia).

Rights, Redistribution, and the Political Economy of Disability Discrimination Laws (with David Engstrom) (assembling a dataset of state disability antidiscrimination laws and testing the hypothesis that they were passed in order to reduce budgetary strain).

When Defensive Review Means No Review (arguing that courts should make findings of fact to determine when jurisdiction channeling statutes act as jurisdiction stripping statutes).