The remaking of the Department of Homeland Security

Acting Department of Homeland Security (DHS) Secretary Kevin McAleenan is greeted by protesters as he arrives to testify before a House Oversight and Reform Committee hearing focusing on the "Trump Administration's Child Separation Policy" on Capitol Hill in Washington, U.S., July 18, 2019. Credit: REUTERS/Joshua Roberts.

The Department of Homeland Security (DHS) was originally created after the 9/11 attacks. DHS includes Customs and Border Protection (CBP), Immigration and Customs Enforcement (ICE), and other agencies. In addition to immigration, the department is supposed to work on cybersecurity, disaster response, and protect against terrorist threats. But in the Trump era, immigration has become its prime focus.