Newsom filed a lawsuit Monday in response to Trump ordering the deployment of roughly 4,000 National Guard members to Los Angeles following protests over his stepped-up enforcement of immigration laws. They were originally called in to protect federal buildings, and the president later ordered the deployment of 700 Marines.

As the military presence ramped up in Los Angeles, communities are preparing for the largest protests against Trump since he took office.

Nationwide protests against President Trump’s crackdown on immigration are putting Democrats in tricky political territory ahead of the high-stakes midterms. After demonstrations against Immigration and Customs Enforcement (ICE) raids roiled Los Angeles and prompted Trump to call in the National Guard despite California’s objections,