Establish a federal program to support the development and deployment of advanced nuclear energy technologies.
One policy goal, tracked across every bill that has carried it.
What’s happening with PIONEER Act?
The PIONEER Act is currently S. 3998 and has been held in the Committee on Homeland Security and Governmental Affairs since March 4, 2026. The committee members must choose to hold a vote to move the bill forward, but most bills fail because committees do not take action on them. This bill has seen no recorded progress since March 4, 2026, which follows the common pattern of legislation ending without a formal committee vote.
Updated July 9, 2026 · Generated by AI. Always verify with official sources.
Where it stands
Now carried by PIONEER Act (S. 3998 (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 S. 4919 (118th), which died when its Congress ended.
S. 4919 (118th) →
Vehicles
Who’s behind it
Mike Lee (R-UT)Wrote and sponsored the current bill.