Industries › Environment & Conservation

What Environment & Conservation organizations are saying about federal rules

426 Environment & Conservation organizations have filed 988 comment letters on 224 proposed federal rules. The most active are Center for Biological Diversity, Natural Resources Defense Council, Environmental Defense Fund. Search their letters.

Comment letters

988

Organizations

426

Rules commented on

224

Agencies they write to most

Interior Department 401 FWS 338 Commerce Department 213 NOAA 213 Defense Department 78 Engineers Corps 77 DOE 74 DOT 68 NRC 60 EPA 52 PHMSA 40 Land Management Bureau 36 USDA 21 FAA 19 FTC 18

Most active organizations

1. Center for Biological Diversity · 94 letters on 75 rules
2. Natural Resources Defense Council · 66 letters on 22 rules
3. Environmental Defense Fund · 35 letters on 23 rules
4. NRDC · 32 letters on 5 rules
5. Earthjustice · 30 letters on 15 rules
6. Sierra Club · 24 letters on 24 rules
7. Western Environmental Law Center · 21 letters on 2 rules
8. Friends of Animals · 17 letters on 17 rules
9. Oceana · 15 letters on 14 rules
10. Defenders of Wildlife · 10 letters on 8 rules
11. Humane World for Animals and Humane World Action Fund · 9 letters on 6 rules
12. The Nature Conservancy (TNC) · 9 letters on 9 rules
13. ASAP, ACEEE, Ceres, CFA, Earthjustice, NCLC, NRDC · 8 letters on 8 rules
14. National Parks Conservation Association (NPCA) · 8 letters on 6 rules
15. Southern Environmental Law Center (SELC) · 8 letters on 6 rules
16. Association of Zoos and Aquariums · 7 letters on 7 rules
17. Nuclear Information and Resource Service · 7 letters on 5 rules
18. Ocean Conservation Research · 7 letters on 5 rules
19. The Pew Charitable Trusts · 7 letters on 7 rules
20. Clean Air Task Force · 6 letters on 6 rules
21. Environmental Action · 6 letters on 5 rules
22. Shark Stewards · 6 letters on 4 rules
23. American Bird Conservancy · 5 letters on 5 rules
24. Association of Fish and Wildlife Agencies · 5 letters on 5 rules
25. Environment America · 5 letters on 5 rules
26. Healthy Gulf · 5 letters on 4 rules
27. Origami Whales Project · 5 letters on 5 rules
28. Texas Nuclear Watchdogs · 5 letters on 5 rules
29. Theodore Roosevelt Conservation Partnership · 5 letters on 4 rules
30. Brookfield Zoo Chicago · 4 letters on 4 rules
31. Captain Paul Watson Foundation Chapter for Chicago and Illinois · 4 letters on 4 rules
32. Earthjustice and Sierra Club · 4 letters on 1 rule
33. Harpseals.org · 4 letters on 1 rule
34. Lincoln Park Zoo · 4 letters on 4 rules
35. National Audubon Society · 4 letters on 4 rules
36. National Wildlife Federation (NFW) · 4 letters on 3 rules
37. Ocean Conservancy · 4 letters on 3 rules
38. Wildlife Conservation Society (WCS) · 4 letters on 3 rules
39. World Wildlife Fund · 4 letters on 4 rules
40. American Rivers · 3 letters on 3 rules
41. Animal Counsel · 3 letters on 3 rules
42. ASAP, AWE, ACEEE, AWWA, AMWA, Ceres, CFA, Earthjustice, NCLC, NRDC · 3 letters on 3 rules
43. Committee to Bridge the Gap · 3 letters on 2 rules
44. Deep Sea Defenders · 3 letters on 3 rules
45. Delta Waterfowl Foundation · 3 letters on 3 rules
46. Earth Day Network Inc. (d.b.a. EARTHDAY.ORG) · 3 letters on 3 rules
47. Ecological Restoration Business Association (ERBA) · 3 letters on 3 rules
48. Environmental Policy Innovation Center · 3 letters on 3 rules
49. Healthy Environment Alliance of Utah (HEAL Utah) · 3 letters on 3 rules
50. In Defense of Animals · 3 letters on 3 rules

Rules that drew the most letters from this industry

• Proposal To Reissue and Modify Nationwide Permits COE-2025-0002 · Engineers Corps · 65 letters Final rule 2026
• Revised Definition of “Waters of the United States” EPA-HQ-OW-2021-0602 · EPA · 52 letters Final rule 2023
• Endangered and Threatened Wildlife and Plants; Regulations Pertaining to Endangered and Threatened Wildlife and Plants FWS-HQ-ES-2025-0029 · FWS · 27 letters Final rule 2026
• Taking and Importing Marine Mammals; Taking Marine Mammals Incidental to Geophysical Surveys in the Gulf of America NOAA-NMFS-2025-0638 · NOAA · 27 letters
• Endangered and Threatened Wildlife and Plants; Interagency Cooperation Regulations FWS-HQ-ES-2025-0044 · NOAA · 25 letters
• Endangered and Threatened Wildlife and Plants; Listing the Giraffe FWS-HQ-ES-2024-0157 · FWS · 25 letters
• Royalty for Oil and Gas Lost From Onshore Federal and Indian Leases BLM-2025-0235 · Land Management Bureau · 24 letters
• Endangered and Threatened Wildlife and Plants; Regulations for Designating Critical Habitat FWS-HQ-ES-2025-0048 · FWS · 23 letters Final rule 2026
• National Wildlife Refuge System; 2026-2027 Station-Specific Hunting and Sport Fishing Regulations FWS-HQ-NWRS-2026-1223 · FWS · 21 letters Final rule 2026
• Reforming and Modernizing the NRC's Radiation Protection Framework NRC-2025-1140 · NRC · 21 letters
• Endangered and Threatened Wildlife and Plants; Endangered Species Status for Seven Species of Pangolin FWS-HQ-ES-2025-0028 · FWS · 19 letters
• Deep Seabed Mining: Revisions to Regulations for Exploration License and Commercial Recovery Permit Applications NOAA-NOS-2025-0108 · NOAA · 18 letters
• Endangered and Threatened Wildlife and Plants; Grizzly Bear Listing on the List of Endangered and Threatened Wildlife With a Revised Section 4(d) Rule; Proposed Revision of the Protective Regulations Under Section 4(d) FWS-R6-ES-2024-0186 · FWS · 18 letters
• Petition for Rulemaking of Animal Rescuers for Change FTC-2026-0529 · FTC · 17 letters
• Greenhouse Gas Technical Assistance Provider and Third-Party Verifier Program AMS-LP-24-0012 · Agricultural Marketing Service · 15 letters
• Endangered and Threatened Wildlife and Plants; Regulations for Eleven Species Treated as Listed Due to Similarity of Appearance FWS-HQ-ES-2025-0176 · FWS · 13 letters
• Proposed Papahānaumokuākea National Marine Sanctuary NOAA-NOS-2021-0114 · NOAA · 13 letters
• Waiver of Specified Statutory Requirements for Commercial Space Launch and Reentry Actions FAA-2026-8614 · FAA · 13 letters
• Administrative Revisions to Regulations Related to Outer Continental Shelf Minerals Other Than Oil, Gas, and Sulphur BOEM-2025-0120 · Ocean Energy Management Bureau · 12 letters
• Advance Notice of Proposed Rulemaking To Amend the North Atlantic Right Whale Vessel Strike Reduction Rule NOAA-NMFS-2026-0364 · NOAA · 12 letters
• Corps of Engineers Agency Specific Procedures To Implement the Principles, Requirements, and Guidelines for Federal Investments in Water Resources COE-2023-0005 · Engineers Corps · 12 letters Final rule 2024
• Marine Mammals; Incidental Take of Polar Bears and Pacific Walruses in the Beaufort Sea and North Slope of Alaska FWS-R7-ES-2026-0694 · FWS · 12 letters Final rule 2026
• NRC Reviews of Reactor Designs Previously Authorized by U.S. Department of Energy or Department of War NRC-2025-1503 · NRC · 12 letters Final rule 2026
• Rescinding the Definition of “Harm” Under the Endangered Species Act FWS-HQ-ES-2025-0034 · NOAA · 11 letters Final rule 2026
• Confidentiality of Information NOAA-HQ-2023-0146 · NOAA · 10 letters

Letters by year

Latest letters