Prohibits law enforcement officers from detaining an individual on the basis of an immigration detainer after that individual becomes eligible for release from criminal custody, unless, at the time the individual becomes eligible for release, a criminal background check reveals the individual was previously convicted of a most serious offense or violent offense.

Prohibits state and local law enforcement officers from making arrests or detaining any individual based on an administrative immigration warrant in the national crime information center database of the federal bureau of investigation.