Immigration legislation intended to grant new power to states to block visas for foreign nationals is likely unconstitutional.

For years, the Hamilton County Sheriff's Office in suburban Indianapolis has wanted to partner with federal immigration authorities to identify and detain immigrants who are in the U.S. illegally and facing charges.

As President Donald Trump ramps up deportations, Oklahoma's law criminalizing illegal immigration remains held up in federal court.

For years, federal immigration authorities have waged wars of words with Boston and other so-called sanctuary cities that limit cooperation with federal immigration officials.