“…First, our survey results and case study research provide much‐needed empirical data on the devolution of immigration powers to the local level and the growing involvement of local police in immigration enforcement (see Lewis and Ramakrishnan 2007; Waslin 2007). Second, while the majority of the analytical literature on immigration federalism focuses on the relationship between the federal government and the states (Chavez and Provine 2009; Newton and Adams 2009; Filindra and Tichenor 2008), we highlight the central role that cities and counties are playing in this emerging landscape, with the states, in many cases, not playing a significant role at all. Finally, we shed light on an important phenomenon: the emergence of a multilayered jurisdictional patchwork, in which overlapping and neighboring jurisdictions can, and do, adopt conflicting policies and practices vis‐à‐vis their immigrant populations.…”