Mayor Johnson has received input from the likes of former mayors Lori Lightfoot and Rahm Emanuel, and former U.S. Education Secretary Arne Duncan.

Johnson is appearing before the Committee on Oversight and Government Reform to defend the city’s law that, in part, restricts police from detaining people solely based on their immigration status.

Chicago Mayor Brandon Johnson and the mayors of New York, Denver and Boston were all questioned by members of Congress on Capitol Hill on Wednesday morning.