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.

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.

A judge Monday will hear arguments on whether the Trump administration violated federal law when National Guard soldiers and U.S. Marines were deployed to Los Angeles in June to quell protests over immigration raids.