Agencies › Interior Department
Who's commenting on Interior Department rules
516 companies and organizations have filed 869 comment letters on 92 proposed rules from the Interior Department. The most frequent commenter is Center for Biological Diversity. 5 rules are open for comment now.
- Comment letters
- 869
- Organizations
- 516
- Rules with letters
- 92
- Open for comment now
- 5
Open for comment now
- Bicycle Use in Park Areas NPS-2026-0166 · due November 2, 2026 · 1 letter so far
- National Petroleum Reserve in Alaska Production Site Development BLM-2026-0133 · due November 9, 2026
- General Provisions; Revised List of Birds Protected by the Migratory Bird Treaty Act FWS-HQ-MB-2026-0133 · due November 30, 2026
- Big Cypress National Preserve; Off-Road Motor Vehicles NPS-2026-0199 · due December 1, 2026
- Gates of the Arctic National Park and Preserve; Use of Off-Road Vehicles for Subsistence Purposes by Residents of Anaktuvuk Pass NPS-2026-0232 · due December 18, 2026
Who comments most on Interior Department rules
- Center for Biological Diversity · 54 letters on 40 rules · Environment & Conservation
- Western Environmental Law Center · 21 letters on 2 rules · Environment & Conservation
- Friends of Animals · 16 letters on 16 rules · Environment & Conservation
- WhoPoo App · 14 letters on 13 rules · Technology, Media & Telecom
- Earthjustice · 13 letters on 5 rules · Environment & Conservation
- Humane World for Animals and Humane World Action Fund · 9 letters on 6 rules · Environment & Conservation
- BlueRibbon Coalition (BRC) · 6 letters on 6 rules · Advocacy & Nonprofits
- Center for Biological Diversity and Humane World for Animals · 6 letters on 1 rule · Pharma & Medical Devices
- CPAC Foundation Center for Regulatory Freedom · 6 letters on 6 rules · Advocacy & Nonprofits
- Energy and Wildlife Action Coalition · 6 letters on 6 rules · Energy, Mining & Utilities
- National Council for Air and Stream Improvement, Inc. (NCASI) · 6 letters on 6 rules · Manufacturing & Chemicals
- National Parks Conservation Association (NPCA) · 6 letters on 4 rules · Environment & Conservation
- Natural Resources Defense Council · 6 letters on 6 rules · Environment & Conservation
- Safari Club International · 6 letters on 6 rules · Advocacy & Nonprofits
- American Petroleum Institute (API) · 5 letters on 5 rules · Energy, Mining & Utilities
- Association of Zoos and Aquariums · 5 letters on 5 rules · Environment & Conservation
- Center for Biological Diversity, Healthy Gulf, and the Sierra Club · 5 letters on 1 rule · Pharma & Medical Devices
- Continental Resources, Inc. · 5 letters on 4 rules · Energy, Mining & Utilities
- Defenders of Wildlife · 5 letters on 4 rules · Environment & Conservation
- Ocean Conservation Research · 5 letters on 4 rules · Environment & Conservation
- Westmoreland Mining LLC · 5 letters on 5 rules · Energy, Mining & Utilities
- Alaska Oil and Gas Association (AOGA) · 4 letters on 3 rules · Energy, Mining & Utilities
- American Bird Conservancy · 4 letters on 4 rules · Environment & Conservation
- Association of Fish and Wildlife Agencies · 4 letters on 4 rules · Environment & Conservation
- Bay Mills Indian Community · 4 letters on 4 rules · Government & Tribes
- Brookfield Zoo Chicago · 4 letters on 4 rules · Environment & Conservation
- Cowlitz Indian Tribe · 4 letters on 4 rules · Government & Tribes
- Environmental Action · 4 letters on 3 rules · Environment & Conservation
- Healthy Gulf · 4 letters on 3 rules · Environment & Conservation
- Lincoln Park Zoo · 4 letters on 4 rules · Environment & Conservation
Letters by industry
Environment & Conservation 401 Energy, Mining & Utilities 97 Government & Tribes 91 Other 74 Advocacy & Nonprofits 67 Agriculture & Food 61 Technology, Media & Telecom 19 Pharma & Medical Devices 15 Manufacturing & Chemicals 9 Business Groups & Chambers 8 Retail, Hospitality & Consumer 7 Healthcare 7 Law, Accounting & Consulting 4 Transportation & Logistics 4 Education 3 Real Estate & Construction 1 Investment & Securities 1
Letters by year
Rules and how many letters each drew
- Endangered and Threatened Wildlife and Plants; Removal of Gila Chub From the List of Endangered and Threatened Wildlife FWS-R2-ES-2022-0001 · 3 letters
- Bicycle Use in Park Areas NPS-2026-0166 · 1 letter Open for comment
- 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 · 29 letters
- Endangered and Threatened Wildlife and Plants; Threatened Species Status With Section 4(d) Rule for the Kern Canyon Slender Salamander and Endangered Species Status for the Relictual Slender Salamander; Designation of Critical Habitat FWS-R8-ES-2022-0081 · 2 letters
- Process for Authorizing Seasonal Migratory Game Bird Hunting FWS-HQ-MB-2024-0206 · 19 letters Final rule 2026
- Oil and Gas Leasing BLM-2025-0037 · 9 letters
- Royalty for Oil and Gas Lost From Onshore Federal and Indian Leases BLM-2025-0235 · 44 letters
- Regulation for Federal Financial Assistance OMB-2026-0034 · 1 letter
- National Wildlife Refuge System; 2026-2027 Station-Specific Hunting and Sport Fishing Regulations FWS-HQ-NWRS-2026-1223 · 40 letters Final rule 2026
- Denali National Park and Preserve; Vehicle Use NPS-2026-0067 · 7 letters
- Marine Mammals; Incidental Take of Polar Bears in the Southern Beaufort Sea; Seismic Exploration Activities by SAExploration, Inc. FWS-R7-ES-2023-0086 · 6 letters
- Utah Regulatory Program OSM-2026-0034 · 1 letter
- Endangered and Threatened Wildlife and Plants; Removal of the North Park Phacelia From the List of Endangered and Threatened Plants FWS-R6-ES-2023-0114 · 4 letters
- Endangered and Threatened Wildlife and Plants; Endangered Species Status for Jamaican Kite Swallowtail FWS-HQ-ES-2026-0397 · 1 letter
- Endangered and Threatened Wildlife and Plants; Designation of Critical Habitat for 22 Species in the Commonwealth of the Northern Mariana Islands and the Territory of Guam FWS-R1-ES-2024-0194 · 5 letters
- Marine Mammals; Incidental Take of Polar Bears and Pacific Walruses in the Beaufort Sea and North Slope of Alaska FWS-R7-ES-2026-0694 · 17 letters Final rule 2026
- Definition of Shellfish; Inclusion of Cephalopods FWS-HQ-LE-2026-0628 · 15 letters Final rule 2026
- Endangered and Threatened Wildlife and Plants; Removal of Geocarpon Minimum From the List of Endangered and Threatened Plants FWS-R4-ES-2024-0043 · 3 letters
- Endangered and Threatened Wildlife and Plants; Status Review for the Lesser Prairie-Chicken FWS-R2-ES-2025-1661 · 16 letters
- Administrative Revisions to Regulations Related to Outer Continental Shelf Minerals Other Than Oil, Gas, and Sulphur BOEM-2025-0120 · 22 letters
- Oil and Gas and Sulfur Operations in the Outer Continental Shelf-Revisions to the 2023 Blowout Preventer Systems and Well Control Rule BSEE-2026-0100 · 4 letters
- Mammoth Cave National Park; Bicycling and Horses NPS-2026-0001 · 3 letters
- Endangered and Threatened Wildlife and Plants; Endangered Species Status for Fish Lake Valley Tui Chub FWS-R8-ES-2024-0207 · 5 letters
- Requirements for Site Security and Production Handling; Applying for Commingling and Allocation Approval BLM-2025-0070 · 18 letters
- Endangered and Threatened Wildlife and Plants; Interagency Cooperation Regulations FWS-HQ-ES-2025-0044 · 52 letters
- Endangered and Threatened Wildlife and Plants; Listing Endangered and Threatened Species and Designating Critical Habitat FWS-HQ-ES-2025-0039 · 16 letters
- Endangered and Threatened Wildlife and Plants; Regulations for Designating Critical Habitat FWS-HQ-ES-2025-0048 · 55 letters Final rule 2026
- Endangered and Threatened Wildlife and Plants; Regulations Pertaining to Endangered and Threatened Wildlife and Plants FWS-HQ-ES-2025-0029 · 56 letters Final rule 2026
- Endangered and Threatened Wildlife and Plants; Regulations for Eleven Species Treated as Listed Due to Similarity of Appearance FWS-HQ-ES-2025-0176 · 33 letters
- Rescission of Conservation and Landscape Health Rule BLM-2025-0001 · 14 letters Final rule 2026
- Montana Regulatory Program OSM-2025-0022 · 1 letter
- Endangered and Threatened Wildlife and Plants; Threatened Species Status With Section 4(d) Rule for the Borneo Earless Monitor FWS-HQ-ES-2025-0110 · 7 letters
- Endangered and Threatened Wildlife and Plants; Removal of Virginia Sneezeweed From the List of Endangered and Threatened Plants FWS-R5-ES-2024-0058 · 1 letter
- Montana Regulatory Program OSM-2025-0007 · 4 letters Final rule 2026
- Montana Regulatory Program OSM-2025-0008 · 6 letters Final rule 2026
- Montana Regulatory Program OSM-2025-0006 · 4 letters
- Montana Regulatory Program OSM-2025-0005 · 4 letters Final rule 2026
- Endangered and Threatened Wildlife and Plants; Endangered Species Status for the Blue Tree Monitor FWS-HQ-ES-2023-0033 · 6 letters
- Endangered and Threatened Wildlife and Plants; Endangered Species Status for Barrens Darter FWS-R4-ES-2025-0033 · 4 letters
- Endangered and Threatened Wildlife and Plants; Endangered Species Status for Seven Species of Pangolin FWS-HQ-ES-2025-0028 · 19 letters
- Rescission of the “Ten-Day Notices and Corrective Action for State Regulatory Program Issues” Rule, Issued April 9, 2024 OSM-2025-0018 · 4 letters
- Endangered and Threatened Wildlife and Plants; Endangered Species Status for Ghost Orchid FWS-R4-ES-2025-0022 · 3 letters
- Rescission of the Management and Protection of the National Petroleum Reserve in Alaska Regulations BLM-2025-0002 · 4 letters
- Endangered and Threatened Wildlife and Plants; Designation of Critical Habitat for Four Distinct Population Segments of the Foothill Yellow-Legged Frog; Reopening of the Comment Period FWS-R8-ES-2023-0157 · 3 letters
- National Wildlife Refuge System; 2025-2026 Station-Specific Hunting and Sport Fishing Regulations FWS-HQ-NWRS-2025-0031 · 6 letters Final rule 2025
- Rescinding the Definition of “Harm” Under the Endangered Species Act FWS-HQ-ES-2025-0034 · 18 letters Final rule 2026
- Endangered and Threatened Wildlife and Plants; Reopening Comment Periods for Three Proposed Rules; Announcement of a Public Hearing for One Proposed Rule FWS-R8-ES-2024-0041 · 2 letters
- Endangered and Threatened Wildlife and Plants; Endangered Species Status for Big Red Sage FWS-R2-ES-2024-0083 · 1 letter
- Assateague Island National Seashore; Oversand Vehicles NPS-2025-0003 · 1 letter Final rule 2026
- Endangered and Threatened Wildlife and Plants; Threatened Species Status With Section 4(d) Rule for Clear Lake Hitch FWS-R8-ES-2024-0161 · 3 letters
- Powered Micromobility Devices NPS-2025-0001 · 7 letters
- Endangered and Threatened Wildlife and Plants; Designation of Critical Habitat for the San Francisco Bay-Delta Distinct Population Segment of the Longfin Smelt FWS-R8-ES-2024-0131 · 3 letters
- Endangered and Threatened Wildlife and Plants; Threatened Status for the Florida Manatee and Endangered Status for the Antillean Manatee FWS-R4-ES-2024-0050 · 11 letters
- Injurious Wildlife Species; Listing Two Freshwater Mussel Genera and One Crayfish Species FWS-HQ-FAC-2024-0060 · 3 letters
- Endangered and Threatened Wildlife and Plants; Removal of Ute Ladies'-Tresses From the List of Endangered and Threatened Plants FWS-R6-ES-2024-0115 · 8 letters
- Endangered and Threatened Wildlife and Plants; Significant Portion of the Range for the Northern Distinct Population Segment of the Southern Subspecies of Scarlet Macaw FWS-HQ-ES-2022-0134 · 2 letters Final rule 2025
- Endangered and Threatened Wildlife and Plants; Endangered Species Status for Puerto Rican Skink, Lesser Virgin Islands Skink, and Virgin Islands Bronze Skink and Designation of Critical Habitat; Threatened Species Status With Section 4(d) Rule for Culebra Skink and Designation of Critical Habitat; Not Warranted Species Status for Mona Skink, Greater Virgin Islands Skink, Greater Saint Croix Skink, and Lesser Saint Croix Skink FWS-R4-ES-2024-0154 · 3 letters
- Endangered and Threatened Wildlife and Plants; Endangered Species Status for Suckley's Cuckoo Bumble Bee FWS-R7-ES-2024-0117 · 8 letters
- Endangered and Threatened Wildlife and Plants; Designation of Critical Habitat for the Rayed Bean, Sheepnose, Snuffbox, and Spectaclecase Mussels FWS-R3-ES-2024-0144 · 10 letters Final rule 2026
- Endangered and Threatened Wildlife and Plants; Endangered Species Status for Eastern Hellbender FWS-R3-ES-2024-0152 · 9 letters
- Endangered and Threatened Wildlife and Plants; Threatened Species Status With Section 4(d) Rule for Monarch Butterfly and Designation of Critical Habitat FWS-R3-ES-2024-0137 · 12 letters
- Administrative Requirements; Pittman-Robertson Wildlife Restoration and Dingell-Johnson Sport Fish Restoration Acts FWS-HQ-WSFR-2023-0125 · 1 letter Final rule 2026
- Endangered and Threatened Wildlife and Plants; Revised Designation of Critical Habitat for the Contiguous U.S. Distinct Population Segment of the Canada Lynx FWS-R6-ES-2024-0142 · 10 letters Final rule 2026
- Endangered and Threatened Wildlife and Plants; Designation of Critical Habitat for the Rusty Patched Bumble Bee FWS-R3-ES-2024-0132 · 8 letters Final rule 2026
- Endangered and Threatened Wildlife and Plants; Threatened Species Status With Section 4(d) Rule for Pecos Pupfish and Designation of Critical Habitat FWS-R2-ES-2024-0143 · 3 letters
- Endangered and Threatened Wildlife and Plants; Listing the Giraffe FWS-HQ-ES-2024-0157 · 43 letters
- Marine Mammals; Incidental Take of Polar Bears During Specified Activities; North Slope, Alaska FWS-R7-ES-2024-0140 · 9 letters Final rule 2025
- Endangered and Threatened Wildlife and Plants; Removing Chipola Slabshell and Fat Threeridge From the Federal List of Endangered and Threatened Wildlife FWS-R4-ES-2024-0051 · 2 letters
- Endangered and Threatened Wildlife and Plants; Threatened Species Status With Section 4(d) Rule for Bethany Beach Firefly FWS-R5-ES-2024-0080 · 2 letters
- Endangered and Threatened Wildlife and Plants; Endangered Species Status for Kentucky Creekshell and Designation of Critical Habitat FWS-R4-ES-2024-0065 · 1 letter
- Glen Canyon National Recreation Area; Motor Vehicles NPS-2024-0005 · 6 letters Final rule 2025
- Endangered and Threatened Wildlife and Plants; Endangered Species Status for Black Creek Crayfish and Designation of Critical Habitat FWS-R4-ES-2024-0090 · 5 letters
- Endangered and Threatened Wildlife and Plants; Endangered Species Status for the Alabama Hickorynut and Threatened Status With Section 4(d) Rule for Obovaria cf. unicolor FWS-R4-ES-2024-0130 · 6 letters
- Endangered and Threatened Wildlife and Plants; Endangered Species Status for West Virginia Spring Salamander and Designation of Critical Habitat FWS-R5-ES-2023-0179 · 1 letter
- Endangered and Threatened Wildlife and Plants; Endangered Status for the Eastern Regal Fritillary, and Threatened Status With Section 4(d) Rule for the Western Regal Fritillary FWS-R6-ES-2023-0182 · 16 letters
- National Wildlife Refuge System; 2024-2025 Station-Specific Hunting and Sport Fishing Regulations FWS-HQ-NWRS-2024-0034 · 13 letters Final rule 2024
- Endangered and Threatened Wildlife and Plants; 6-Month Extension of Final Determination on the Proposed Endangered Species Status for the Toothless Blindcat and the Widemouth Blindcat FWS-R2-ES-2023-0069 · 1 letter
- Endangered and Threatened Wildlife and Plants; Removal of Northeastern Bulrush From the Federal List of Endangered and Threatened Plants FWS-R5-ES-2023-0014 · 1 letter Final rule 2026
- Wyoming Regulatory Program OSM-2024-0003 · 1 letter
- Wyoming Regulatory Program OSM-2024-0002 · 1 letter
- Endangered and Threatened Wildlife and Plants; Designation of Critical Habitat for Barrens Topminnow FWS-R4-ES-2023-0224 · 4 letters
- Endangered and Threatened Wildlife and Plants; Removal of White Sedge (Carex albida) From the List of Endangered and Threatened Plants FWS-R8-ES-2023-0088 · 3 letters
- Rights of Way NPS-2024-0004 · 9 letters Final rule 2024
- Endangered and Threatened Wildlife and Plants; Designation of Critical Habitat for the Dixie Valley Toad FWS-R8-ES-2023-0188 · 4 letters
- Chattahoochee River National Recreation Area; Bicycling NPS-2024-0003 · 4 letters Final rule 2024
- Endangered and Threatened Wildlife and Plants; Threatened Species Status for Coal Darter With Section 4(d) Rule FWS-R4-ES-2023-0220 · 3 letters
- Endangered and Threatened Wildlife and Plants; Threatened Species Status With Section 4(d) Rule for the Northwestern Pond Turtle and Southwestern Pond Turtle FWS-R8-ES-2023-0092 · 10 letters
- Endangered and Threatened Wildlife and Plants; Removal of Roanoke Logperch From the List of Endangered and Threatened Wildlife FWS-R5-ES-2023-0181 · 1 letter Final rule 2025
- Endangered and Threatened Wildlife and Plants; Threatened Species Status With Section 4(d) Rule for Pygmy Three-Toed Sloth FWS-HQ-ES-2023-0151 · 2 letters
- Endangered and Threatened Wildlife and Plants; Endangered Species Status for Bushy Whitlow-Wort and Designation of Critical Habitat FWS-R2-ES-2023-0102 · 2 letters
- Subsistence Management Regulations for Public Lands in Alaska-Subpart B; Federal Subsistence Board Membership FWS-R7-SM-2024-0017 · 10 letters Final rule 2024
- Natural Resource Damages for Hazardous Substances DOI-2022-0016 · 9 letters Final rule 2026
