Lawyers for President Donald Trump and California Gov. Gavin Newsom are set to face off Monday to determine whether the president violated a 147-year-old law when he deployed the National Guard to quell anti-immigration enforcement protests in Los Angeles – against the wishes of the governor.

Newsom and the State of California filed suit against Trump, Secretary of Defense Pete Hegseth and the Department of Defense over the National Guard being sent to the state to quell protests over immigration raids.

US President Donald Trump may deploy National Guard troops in Washington, DC, with their roles still under consideration, Reuters reported, citing officials.