He joined a discussion Friday morning with members of the U.N.'s Human Rights Council.
Johnson spoke about the federal immigration crackdown and also the impact of the government shutdown.
Speaking on the ending of SNAP benefits, Mayor Johnson said, "As someone with first-hand experience, I can tell you how humiliating it is when you open the refrigerator and you have nothing to eat. In the wealthiest country in the world, there is no reason why our federal government should allow hundreds of thousands of Chicagoans to go hungry."
On the immigration enforcement in Chicago, Mayor Johnson said. "In Chicago, we live with the consequences of that moral failure every day. Families torn apart by immigration raids. Raids that have targeted daycare teachers, ride-share drivers, and restaurant cooks. Honest, hardworking, law-abiding people who contribute to the soul of Chicago, who literally make our city run."
He invited U.N. leaders to visit the city to experience the impact firsthand.