Immigration Policy Tracker

Sanctuary and Anti-Sanctuary Policies: Research Mapping State-Local Conflicts

Sanctuary and Anti-Sanctuary Policies: Research Mapping State-Local Conflicts

Key Questions

What does the new dataset on sanctuary policies include?

The dataset maps sanctuary and anti-sanctuary policies across the U.S. from 2000 to 2021. It connects immigration enforcement measures to public health outcomes and the use of punitive preemption by states.

How does this research address state-local conflicts over immigration?

It offers a longitudinal, research-backed view of how these conflicts impact immigrant communities. The Q&A with the researcher highlights evolving policy dynamics and their broader effects.

Is the sanctuary policy landscape still changing?

Yes, the summary notes that the policy landscape continues to evolve amid ongoing legislative battles. This provides updated context for understanding current state and local approaches.

A new Q&A with a researcher presents a dataset mapping sanctuary and anti-sanctuary policies from 2000-2021, connecting immigration enforcement to public health outcomes and punitive preemption. This provides a longitudinal, research-backed perspective on how state-local conflicts affect immigrant communities. The policy landscape continues to evolve with ongoing legislative battles.

Sources (2)
Updated Jul 3, 2026