Update federal law to ensure that all firearms are detectable by security screening equipment.
One policy goal, tracked across every bill that has carried it.
What’s happening with Undetectable Firearms Modernization Act?
The Undetectable Firearms Modernization Act is represented by H.R. 4221, which has been in the House Committee on the Judiciary since June 26, 2025. The committee members must act next to hold a vote, but most bills fail because they never receive a committee hearing. No action has occurred on this legislation since June 26, 2025.
Updated July 9, 2026 · Generated by AI. Always verify with official sources.
Where it stands
Now carried by Undetectable Firearms Modernization Act (H.R. 4221 (119th)) →
Legislative Progress
How we got here
Every bill that has carried this goal, oldest first.
Died with Congress · Jan 3, 2025
Died when the 118th Congress ended without final passage. Bills must be reintroduced under a new number to be revived.
Reintroduced · Jan 3, 2025
Reintroduced from H.R. 4160 (118th), which died when its Congress ended.
H.R. 4160 (118th) →
Vehicles
Who’s behind it
Madeleine Dean (D-PA)Wrote and sponsored the current bill.