The U.S. government’s unprecedented use of National Guard troops in Los Angeles to protect officers carrying out President Donald Trump’s immigration crackdown was illegal and should be ended, a lawyer for the state of California told a federal judge on Tuesday.

Lawyers for the state of California and the federal government faced off in court Tuesday over President Trump's deployment of thousands of National Guard troops to Los Angeles.The attorney for the state,

If President Trump deploys troops to other American cities, experts say it would be a clear departure from founding principles and invite a legal challenge.

A federal judge is hearing arguments on whether military troops deployed this summer by the Trump administration to Los Angeles violated a federal law that bars troops from conducting law enforcement duties within the country.

National Guard troops are roaming the streets of Washington, D.C. after being deployed by President Donald Trump, who declared an emergency in the nation’s capital earlier this week. Around 800 National Guard members arrived in D.