A federal judge in San Francisco seemed unconvinced after a three-day trial that the continued deployment of federalized members of California’s National Guard — who were originally deployed to Los Angeles in response to protests against President Donald Trump’s immigration agenda — is lawful.

US President Donald Trump is pushing the bounds of military activity on American soil, but a 150-year-old law could spell trouble for his plans.

"It’s the absence of any limits to any national police force, that’s what I’m sitting here trying to figure out."