Travel Ban Caught Homeland Security by Surprise, Report Concludes

Agents were given little notice and conflicting guidance on how to enforce President Trump’s first travel ban last year, leading to chaos at airports.

Heated Exchanges About Trump’s Words

A Senate hearing meant to be about border walls devolved into a back-and-forth on whether the president used an obscenity to describe African and Caribbean countries.

Trump Administration Considers Separating Families to Combat Illegal Immigration

To address rising numbers of border crossings, officials may begin detaining parents apart from their children, a change in practice that immigrant advocates criticized as cruel.

Kirstjen Nielsen, White House Aide, Is Confirmed as Homeland Security Secretary

Ms. Nielsen, an aide to John F. Kelly, the White House chief of staff, has defended herself against charges that she is too inexperienced to lead the department.

Homeland Security Nominee Defends Her Experience Amid Questions from Democrats

Kirstjen Nielsen, President Trump’s choice to run the Department of Homeland Security, has not led a large organization but is likely to be easily confirmed.

White House Aide Is Selected to Run Homeland Security Department

President Trump’s choice, Kirstjen Nielsen, is at top aide to his chief of staff, John F. Kelly. Some White House aides had chafed at her regimented style.