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Union of Concerned Scientists

Nonprofit or advocacy group Advocacy & Nonprofits

Union of Concerned Scientists is listed as a nonprofit or advocacy group in Advocacy & Nonprofits. It has filed 6 comment letters on 5 proposed federal rules in 2026, most often with the Nuclear Regulatory Commission. Of those rules, 2 rules became final.

Type
Nonprofit or advocacy group
Industry
Advocacy & Nonprofits
Comment letters
6
Rules commented on
5
First letter
2026-02-05
Latest letter
2026-08-10
Agencies most often
Nuclear Regulatory Commission (4); Securities and Exchange Commission (1); National Highway Traffic Safety Administration (1)

Activity by year

20266

Letters

2026

Modernizing Materials Licensing

NRC-2025-1370Nuclear Regulatory Commission · filed 2026-08-10

Modernizing Materials Licensing

NRC-2025-1370Nuclear Regulatory Commission · filed 2026-08-10

Rescission of Climate-Related Disclosure Rules

S7-2026-19Securities and Exchange Commission · filed 2026-07-29

Modernizing Security Requirements

NRC-2025-1303Nuclear Regulatory Commission · filed 2026-07-27

NRC Reviews of Reactor Designs Previously Authorized by U.S. Department of Energy or Department of War

NRC-2025-1503Nuclear Regulatory Commission · filed 2026-05-05 Final rule 2026

The Safer Affordable Fuel-Efficient (SAFE) Vehicles Rule III for Model Years 2022 to 2031 Passenger Cars and Light Trucks

NHTSA-2025-0491Transportation Department, National Highway Traffic Safety Administration · filed 2026-02-05 Final rule 2026