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

It was earlier this year that California Gov. Gavin Newsom was making nice with President Donald Trump as he sought help for his wildfire-battered state and moderating his approach ahead of a potential bid for the White House.

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.

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.

Newsom filed a lawsuit Monday in response to Trump ordering the deployment of roughly 4,000 National Guard members to Los Angeles following protests over his stepped-up enforcement of immigration laws. They were originally called in to protect federal buildings, and the president later ordered the deployment of 700 Marines.

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 ...

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.