Former DHS chief warns of Iranian sleeper cells after U.S. strikes, calling it a “highest magnitude" threat and urging the ...

Regarding Homeland Security Secretary Kristi L. Noem’s June 24 op-ed, “ Harvard flouted the rules. Now, it’s getting a hard ...

President Donald Trump announced his appointments to an advisory council inside the Department of Homeland Security on ...

The scheme was revealed to law enforcement by an accused Iranian government asset who spent time in American prisons for ...

Issue: Whether the Supreme Court should stay a district court order preventing DHS from removing non-citizens to a country ...

The Department of Homeland Security has issued a National Terrorism Advisory System bulletin warning of increased ...

The U.S. Department of Homeland Security (DHS) warned on Sunday that the "ongoing Iran conflict is causing a heightened ...

The United States is warning of a “heightened threat environment” after President Trump ordered strikes on three Iranian ...

The U.S. Department of Homeland Security (DHS) warned over the weekend of escalating cyberattack risks by Iran-backed hacking ...

PORTLAND, Oregon — Homeland Security officials have issued a national terrorism bulletin warning of a “heightened threat ...

A new bulletin from DHS warns Americans of increased threats after U.S. strikes on Iran, and outlines what could happen next.

Sources told NBC News Iran sent a communication to President Trump last week, threatening to activate sleeper-cell terror ...