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Index/Topics/Constitutional law and foreign relations

Constitutional law and foreign relations

Federal law and constitutional doctrine limit states' ability to regulate foreign-relations matters and already ensure that no religious law may override U.S. federal or state law.

Fact-Checks

2 results
Jan 22, 2026

Is it illegal for the governor of California to 1) take away licenses of ICE agents and 2) not allow employers to hire former ICE agents

A governor cannot unilaterally nullify federal law or order federal officers to stop performing federal duties; has recently moved to identifies itself and to bar masks in the field, but federal offic...

Jan 22, 2026

How do countries enforce bans based on religion or ethnicity at their borders?

States enforce entry restrictions through formal legal instruments—proclamations, visa suspensions and watchlists—and operational border controls such as enhanced screening, transit-zone denials, and ...