How Corey Lewandowski Wielded Power Inside D.H.S.

While he was supposed to serve in a limited role as an adviser to Kristi Noem, Mr. Lewandowski had wide influence over contracts, personnel and operations inside the agency over the last year.

By Hamed Aleaziz, Alexandra Berzon, Nicholas Nehamas, Zolan Kanno-Youngs and Tyler Pager