Judicial precedent backs up the federal government's authority for immigration enforcement as challenges to "sanctuary" policies loom in federal courts.

The National Guard has at times detained protesters in its deployment to Los Angeles, an official said Wednesday, as demonstrations against Immigration and Customs enforcement raids spread to other major cities.

Gov. Gavin Newsom has filed a lawsuit against President Donald Trump to stop the National Guard and Marines from aiding immigration raids in Los Angeles, amid ongoing state and federal immigration policy disputes in other Democratic-led states.

California Attorney General Rob Bonta has announced his lawsuit against the Trump administration for deploying the National Guard in Los Angeles to contain the riots over the immigration raids that broke out this past weekend.

Tensions are escalating between President Donald Trump and California Gov. Gavin Newsom as protests against Immigration and Customs Enforcement continue to grip Los Angeles and spread to New York City, San Francisco, Boston, Austin, Texas, and other cities.

A federal court hearing will determine if the Trump administration can deploy troops for immigration raids in Los Angeles

From the streets of Los Angeles to *** San Francisco courtroom ... to deploy the military to assist with ramped-up immigration raids. The lawsuit from California Gov. Gavin Newsom seeks a ...

Robert McWhirter, a constitutional law expert, discusses the lawsuit filed by California challenging President Donald Trump’s authority to activate the National Guard.

Gavin Newsom filed a lawsuit against Trump for deploying ... After small protests against immigration raids in Los Angeles on June 6, Trump took several swift actions, calling in the 4,000 ...

Former Attorney General Bill Barr slams Gov. Gavin Newsom’s lawsuit over Trump’s National Guard deployment, calling the claims ‘nonsense.'