When President Donald Trump returned from a Bastille Day visit to Paris during his first term, he asked his military brass to organize a parade akin to the one he’d watched march down the Champs-Élysées.

A federal court hearing is scheduled for Thursday challenging Trump's use of the National Guard and Marines to support immigration raids in Los Angeles. California leaders warn that the military intervention is the onset of a much broader effort by Trump to overturn norms at the heart of America's political system.