The Justice Department filed a lawsuit Monday against the city of Los Angeles over its sanctuary laws that instruct local officials not to assist with federal immigration operations.

The lawsuit, filed in the U.S. District Court for the Central District of California, came weeks after the Trump administration deployed the National Guard and Marines to the city to quell violence stemming from protests against federal immigration enforcement operations. The DOJ claimed the city violated the Constitution’s supremacy clause on three counts, via unlawful regulation and discrimination against the federal government.