In a lawsuit filed Monday, the administration said a city ordinance severely limiting cooperation with federal immigration officials violates the Constitution’s supremacy clause.

President Donald Trump’s administration has sued Los Angeles, claiming the city is obstructing the enforcement of federal ...

The complaint targets the so-called "sanctuary city" ordinance, alleging it hampers the crackdown on a "crisis of illegal ...

With two conservatives in dissent, the Supreme Court on Monday turned down a property-rights claim from Los Angeles landlords ...