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H.R. 4255
U.S. House•In House Committee
Summary
H.R. 4255, the Enhancing Safety for Animals Act of 2025, was introduced in the House on Jun 30, 2025 by Rep. Paul Gosar (R) with 12 co-sponsors. It last saw action on Jan 22, 2026: Ordered to be Reported in the Nature of a Substitute (Amended) by the Yeas and Nays: 23 - 13.
Record
Text
H.R. 4255 has 12 co-sponsors.
hb4255/introduced-in-house.txt119 HR 4255 IH: Enhancing Safety for Animals Act of 2025U.S. House of Representatives2025-06-30text/xmlENPursuant to Title 17 Section 105 of the United States Code, this file is not subject to copyright protection and is in the public domain.I 119th CONGRESS 1st Session H. R. 4255 IN THE HOUSE OF REPRESENTATIVES June 30, 2025 Mr. Gosar (for himself, Mr. Biggs of Arizona , Ms. Boebert , Mr. Crane , Ms. Hageman , Mr. Hamadeh of Arizona , Mr. Hurd of Colorado , Mr. LaMalfa , Mr. Stauber , Mr. Tiffany , and Mr. Zinke ) introduced the following bill; which was referred to the Committee on Natural Resources A BILLTo remove the Mexican wolf from the lists of threatened species and endangered species published pursuant to the Endangered Species Act of 1973, and for other purposes.1.Short titleThis Act may be cited as the Enhancing Safety for Animals Act of 2025 .2.Delisting of Mexican wolf(a)FindingsThe Congress finds the following:(1)The Mexican wolf population has increased for 9 consecutive years, growing by at least 11 percent in 2024.(2)At the end of 2024, the United States Fish and Wildlife Service documented a presence of at least 286 wild Mexican wolves and approximately 350 captive Mexican wolves.(3)The United States Mexican Wolf population is thriving and will meet its recovery goals for gene diversity, population growth, and abundance.(4)The United States Fish and Wildlife Service has repeatedly moved Mexican wolf recovery goalposts through amended recovery plans, revised population and genetic objectives, and reduced mitigation opportunities.(5)Current United States Fish and Wildlife recovery strategies and goals encompass not only the Mexican wolf population in the United States, but also in Mexico.(6)Americans in the Mexican Wolf Experimental Population Area bear the brunt of a rapidly growing United States Mexican wolf population without any chance of recovery because of failing conservation activities in Mexico, a foreign country.(7)Mexican wolves in the United States routinely kill livestock, pose serious safety risks to humans and pets, excessively prey upon game animals, and reduce recreational opportunities.(8)Depredation of cattle, horses, and other livestock by Mexican wolves financially burdens American farmers and ranchers living in and near the Mexican Wolf Experimental Population Area.(9)Rather than streamline Mexican wolf depredation evidentiary standards to ensure ranchers are properly compensated for livestock losses, the Wildlife Services division of the Animal and Plant Health Inspection Service imposed for a year a new standard requiring that subcutaneous hemorrhaging be present on carcasses as a condition of confirming that an animal was killed by a Mexican wolf.(10)Confirming that livestock were killed by Mexican wolves is often impossible under the newly adopted evidentiary standard because livestock grazing areas in and near the Mexican Wolf Experimental Population Area are often thousands of acres in size, depredations are commonly only discovered days after they occur, scavengers often devour livestock carcasses along with depredation evidence, and subcutaneous hemorrhaging remains preset for a short period of time following depredation.(11)Requiring evidence of subcutaneous hemorrhaging is inconsistent with other widely accepted depredation evidentiary standards like bite marks, tracks, and signs of struggle, and significantly reduces the ability for livestock owners to be made whole financially after suffering losses through Mexican wolf depredation.(12)The Animal and Plant Health Inspection Service’s opaque depredation evidentiary standards are not subject to a public notice and comment process but are nevertheless blindly adopted by the United States Fish and Wildlife Service.(13)The United States Fish and Wildlife Service has refused to take or approve sufficient lethal removal actions against Mexican wolves despite the deaths, injuries, and damage caused by Mexican wolves leading to at least 2 counties within the Mexican Wolf Experimental Population Area declaring a public disaster and emergency, and at least 1 Tribal government formally supporting such declaration(b)Delisting of Mexican wolfNotwithstanding any other provision of law, the Mexican wolf (Canis lupus baileyi) is removed from the lists of threatened species and endangered species, as applicable, that are published pursuant to section 4 of the Endangered Species Act of 1973 ( 16 U.S.C. 1533 ).(c)Nullification of rules relating to Mexican wolfThe following final rules issued by the United States Fish and Wildlife Service with respect to the Mexican wolf shall have no force or effect:(1)The final rule titled Endangered and Threatened Wildlife and Plants; Endangered Status for the Mexican Wolf (80 Fed. Reg. 2488; published January 16, 2015).(2)The final rule titled Endangered and Threatened Wildlife and Plants; Revision to the Nonessential Experimental Population of the Mexican Wolf (87 Fed. Reg. 39348; published July 1, 2022).(d)Bifurcation of Mexican wolf population criteriaIf the Mexican wolf (Canis lupus baileyi) is listed as a threatened species or an endangered species under the Endangered Species Act of 1973 ( 16 U.S.C. 1531 et seq. ) after the date of the enactment of this section, the Secretary of the Interior, acting through the Director of the United States Fish and Wildlife Service, may not reference or otherwise consider—(1)the status of the recovery of the Mexican wolf in Mexico in developing or implementing under section 4(f) of that Act ( 16 U.S.C. 1533(f) ) a plan for the Mexican wolf; or(2)the status of the Mexican wolf in Mexico in determining under section 4(c) of that Act ( 16 U.S.C. 1533(c) ) whether the Mexican wolf should be—(A)changed in status from an endangered species to a threatened species;(B)changed in status from a threatened species to an endangered species; or(C)removed from the lists of threatened species and endangered species, as applicable, that are published pursuant to section 4 of the Endangered Species Act of 1973 ( 16 U.S.C. 1533 ).
Tracker
The tracker indicates the progress of this legislation as it moves through the legislative process.
- Introduced2025-06-30
- Passed House
- Passed Senate
- Conference
- To President
- Became Law
To remove the Mexican wolf from the lists of threatened species and endangered species published pursuant to the Endangered Species Act of 1973, and for other purposes.
Sponsors
Rep. Paul Gosar (R) sponsors H.R. 4255, and 12 members have co-sponsored it, 10 of them from the day it was introduced.

Rep. · R–AZ-9 · Sponsor
Introduced Jun 30, 2025

Rep. · R–AZ-5 · Co-sponsor
Joined Jun 30, 2025 · Original

Rep. · R–CO-4 · Co-sponsor
Joined Jun 30, 2025 · Original

Rep. · R–AZ-2 · Co-sponsor
Joined Jun 30, 2025 · Original

Rep. · R–WY-0 · Co-sponsor
Joined Jun 30, 2025 · Original

Rep. · R–AZ-8 · Co-sponsor
Joined Jun 30, 2025 · Original

Rep. · R–CO-3 · Co-sponsor
Joined Jun 30, 2025 · Original

Rep. · R–CA-1 · Co-sponsor
Joined Jun 30, 2025 · Original

Rep. · R–MN-8 · Co-sponsor
Joined Jun 30, 2025 · Original

Rep. · R–WI-7 · Co-sponsor
Joined Jun 30, 2025 · Original
Committees
H.R. 4255 went before 2 committees: Natural Resources and Water, Wildlife and Fisheries Subcommittee.

Actions
H.R. 4255 has taken 7 actions since Jun 30, 2025, the latest on Jan 22, 2026.
| Chamber | Action | |||
|---|---|---|---|---|
Jan 22, 2026 | House | Subcommittee on Water, Wildlife and Fisheries DischargedNatural Resources Committee | ||
Jan 22, 2026 | House | Committee Consideration and Mark-up Session HeldNatural Resources Committee | ||
Jan 22, 2026 | House | Ordered to be Reported in the Nature of a Substitute (Amended) by the Yeas and Nays: 23 - 13.Natural Resources Committee | ||
Sep 3, 2025 | House | Subcommittee Hearings HeldWater, Wildlife and Fisheries Subcommittee | ||
Aug 29, 2025 | House | Referred to the Subcommittee on Water, Wildlife and Fisheries.Water, Wildlife and Fisheries Subcommittee |
Votes
H.R. 4255 has not gone to a roll call.
Titles
H.R. 4255 goes by 3 titles, 1 of them short titles.
- Enhancing Safety for Animals Act of 2025 — Display Title
- Enhancing Safety for Animals Act of 2025 — Short Title(s) as Introduced
- To remove the Mexican wolf from the lists of threatened species and endangered species published pursuant to the Endangered Species Act of 1973, and for other purposes. — Official Title as Introduced
Lobbying
6 clients hired 6 firms and 64 registered lobbyists who named H.R. 4255 in 19 quarterly filings, 2025 to 2026. Reported under the Lobbying Disclosure Act; a filing’s income covers everything its registrant worked that quarter, so the amounts below are the filings’, not this bill’s.
Filed under Animals, Budget/Appropriations, Natural Resources, Agriculture, Energy/Nuclear, Clean Air and Water (quality), Transportation, Education.
Clients
Who paid to be heard, by how many filings named the bill.
| Client | Business | State | Firms | Filings | Reported |
|---|---|---|---|---|---|
| AMERICAN FARM BUREAU FED | — | District of Columbia | 1 | 5 | — |
| HUMANE WORLD ACTION FUND | — | District of Columbia | 1 | 4 | — |
| SIERRA CLUB | — | California | 1 | 4 | — |
| DEFENDERS OF WILDLIFE | — | District of Columbia | 1 | 3 | — |
| EARTHJUSTICE ACTION | nonprofit advocacy organization | District of Columbia | 1 | 2 | — |
| LEAGUE OF CONSERVATION VOTERS | — | District of Columbia | 1 | 1 | — |
Firms
Registrants who filed on the bill, by filings.
| Registrant | Clients | Filings | Reported |
|---|---|---|---|
| AMERICAN FARM BUREAU FED | 1 | 5 | — |
| HUMANE WORLD ACTION FUND AND AFFILIATES (FORMERLY KNOWN AS HUMANE SOCIETY LEGISLATIVE FUND) | 1 | 4 | — |
| SIERRA CLUB | 1 | 4 | — |
| DEFENDERS OF WILDLIFE | 1 | 3 | — |
| EARTHJUSTICE ACTION | 1 | 2 | — |
| LEAGUE OF CONSERVATION VOTERS | 1 | 1 | — |
Lobbyists
Named on the filings that cite the bill. The 20 named most often, of 64.
| Lobbyist | Firms | Clients | Filings |
|---|---|---|---|
| BRIAN GLENN | 1 | 1 | 5 |
| COURTNEY BRIGGS | 1 | 1 | 5 |
| DAVID SALMONSEN | 1 | 1 | 5 |
| JOHNIE BOATRIGHT | 1 | 1 | 5 |
| RUDOLPH LAYHER | 1 | 1 | 5 |
| RYAN YATES | 1 | 1 | 5 |
| SHELBY HAGENAUER | 1 | 1 | 5 |
| TRAVIS CUSHMAN | 1 | 1 | 5 |
| AIMEE COLLINS-MANDEVILLE | 1 | 1 | 4 |
| ANNA MARIE MALLOY | 1 | 1 | 4 |
| ATHAN MANUEL | 1 | 1 | 4 |
| AUTUMN LANKFORD | 1 | 1 | 4 |
| GILLIAN LYONS | 1 | 1 | 4 |
| HARRISON MANIN | 1 | 1 | 4 |
| JENNIFER ESKRA | 1 | 1 | 4 |
| JOHN NEWTON | 1 | 1 | 4 |
| MAHYAR SOROUR | 1 | 1 | 4 |
| MELINDA PIERCE | 1 | 1 | 4 |
| MIRIAM BRODY | 1 | 1 | 4 |
| PATRICK DRUPP | 1 | 1 | 4 |
Filings
The documents themselves, on the Senate’s Lobbying Disclosure site, largest reported first.
| Client | Registrant | Period | Reported | Document |
|---|---|---|---|---|
| AMERICAN FARM BUREAU FED | AMERICAN FARM BUREAU FED | 2026 second_quarter | $293.8K | 2nd Quarter - Amendme… |
| AMERICAN FARM BUREAU FED | AMERICAN FARM BUREAU FED | 2026 first_quarter | $290K | 1st Quarter - Report |
| HUMANE WORLD ACTION FUND | HUMANE WORLD ACTION FUND AND AFFILIATES (FORMERLY KNOWN AS HUMANE SOCIETY LEGISLATIVE FUND) | 2026 second_quarter | $280K | 2nd Quarter - Report |
| AMERICAN FARM BUREAU FED | AMERICAN FARM BUREAU FED | 2025 third_quarter | $270K | 3rd Quarter - Report |
| AMERICAN FARM BUREAU FED | AMERICAN FARM BUREAU FED | 2025 fourth_quarter | $250K | 4th Quarter - Report |
| HUMANE WORLD ACTION FUND | HUMANE WORLD ACTION FUND AND AFFILIATES (FORMERLY KNOWN AS HUMANE SOCIETY LEGISLATIVE FUND) | 2025 third_quarter | $250K | 3rd Quarter - Report |
| HUMANE WORLD ACTION FUND | HUMANE WORLD ACTION FUND AND AFFILIATES (FORMERLY KNOWN AS HUMANE SOCIETY LEGISLATIVE FUND) | 2026 first_quarter | $220K | 1st Quarter - Report |
| LEAGUE OF CONSERVATION VOTERS | LEAGUE OF CONSERVATION VOTERS | 2026 first_quarter | $200K | 1st Quarter - Report |
| EARTHJUSTICE ACTION | EARTHJUSTICE ACTION | 2026 second_quarter | $188.3K | 2nd Quarter - Report |
| HUMANE WORLD ACTION FUND | HUMANE WORLD ACTION FUND AND AFFILIATES (FORMERLY KNOWN AS HUMANE SOCIETY LEGISLATIVE FUND) | 2025 fourth_quarter | $180K | 4th Quarter - Report |
| AMERICAN FARM BUREAU FED | AMERICAN FARM BUREAU FED | 2026 second_quarter | $176.6K | 2nd Quarter - Report |
| SIERRA CLUB | SIERRA CLUB | 2026 first_quarter | $120K | 1st Quarter - Report |
| EARTHJUSTICE ACTION | EARTHJUSTICE ACTION | 2026 first_quarter | $111.7K | 1st Quarter - Report |
| DEFENDERS OF WILDLIFE | DEFENDERS OF WILDLIFE | 2025 second_quarter | $110K | 2nd Quarter - Report |
| SIERRA CLUB | SIERRA CLUB | 2026 second_quarter | $100K | 2nd Quarter - Report |
| DEFENDERS OF WILDLIFE | DEFENDERS OF WILDLIFE | 2025 fourth_quarter | $100K | 4th Quarter - Report |
| SIERRA CLUB | SIERRA CLUB | 2025 third_quarter | $90K | 3rd Quarter - Report |
| SIERRA CLUB | SIERRA CLUB | 2025 fourth_quarter | $80K | 4th Quarter - Report |
| DEFENDERS OF WILDLIFE | DEFENDERS OF WILDLIFE | 2025 third_quarter | $80K | 3rd Quarter - Report |
Classification
The Congressional Research Service files H.R. 4255 under Animals, one of its 31 policy areas, and gives it 3 legislative subjects.
CRS Subjects
CRS assigns every bill one policy area from its 31; H.R. 4255’s is Animals.
hr4255/policy-areas.txtLegislative Subjects
H.R. 4255 carries 3 of CRS’s legislative subjects, from Animal protection and human-animal relationships to Wildlife conservation and habitat protection.
hr4255/subjects.txtSource: congress.gov · legiscan.com