Last mentioned: Mar 19, 2026
Expected Committee Vote
The Senate committees are scheduled to vote on advancing the nomination to the full floor.
Confirmation Hearing
Mullin testifies before the Senate Judiciary and Homeland Security committees.
Nomination Announced
President Trump names Markwayne Mullin as his nominee for Secretary of Homeland Security.
Senator Markwayne Mullin appeared before the U.S. Senate for his confirmation hearing as President Donald Trump’s nominee for Secretary of Homeland Security. While immigration and border enforcement dominated the initial discourse, the transition signals a potential shift in the department’s approach to cybersecurity and critical infrastructure protection.
This page surfaces every story mentioning U.S. Department of Homeland Security across our cybersecurity coverage. We track each entity's appearance over time so readers can trace how the narrative evolves — which developments are isolated incidents, which build into longer arcs, and which reframe how operators in the space think about the entity. Story selection uses the same multi-source verification gate applied across the rest of our coverage.
Read our editorial methodology for how we identify, deduplicate, and score entity references. Our glossary defines the technical terms used across stories on this page, and our trends index contextualizes individual developments against the longer-running cybersecurity beat. Cross-entity comparisons live on our compare view.
| What you see | What it tells you |
|---|---|
| Story count | Number of distinct stories where U.S. Department of Homeland Security was a primary or referenced actor. |
| Recency clustering | Whether mentions are concentrated in a recent window (a news cycle) or distributed (a sustained arc). |
| Sentiment distribution | Aggregate sentiment of the stories mentioning this entity, weighted by impact score. |
| Cross-niche links | When the same entity surfaces in our sibling networks, we link to those views to enrich context. |