The Trump administration is suing Chicago over what are known as sanctuary laws. The administration claims the nation’s third-largest city “thwarts” federal efforts to enforce immigration laws.

Chicago attorney Andrew Stoltmann joins ‘Fox & Friends Weekend’ to discuss the Department of Justice’s lawsuit against Illinois, Chicago, and their leaders over alleged interference in the Trump administration's mass deportation plans.

The lawsuit argues that the U.S. Constitution’s Supremacy Clause “prohibits Illinois, Chicago, Cook County, and their officials from obstructing the Federal Government’s ability to enforce laws that Congress has enacted or to take actions entrusted to it by the Constitution.”