Here's a rundown of several key claims made during the hearing, and our reporting on the issues and numbers referenced by officials.

Political strategist Delmarie Cobb says Mayor Johnson held up in a hostile room as he testified before the U.S. House Oversight Committee on Chicago’s sanctuary city status. Cobb joins Marie Saavedra with analysis.

The mayors of four so-called “sanctuary cities” faced tough questions from lawmakers about their policies toward immigrants and how they work with Immigration and Customs Enforcement at a House Oversight and Government Reform Committee on Wednesday.