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H.R. 161
U.S. House•House Floor Calendar
Summary
H.R. 161, the New Source Review Permitting Improvement Act, was introduced in the House on Jan 3, 2025 by Rep. Morgan Griffith (R) with 21 co-sponsors. It last saw action on Apr 28, 2026: Placed on the Union Calendar, Calendar No. 542.
Record
Text
H.R. 161 has 21 co-sponsors.
hb161/introduced-in-house.txt119 HR 161 IH: New Source Review Permitting Improvement ActU.S. House of Representatives2025-01-03text/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. 161 IN THE HOUSE OF REPRESENTATIVES January 3, 2025 Mr. Griffith introduced the following bill; which was referred to the Committee on Energy and Commerce A BILLTo amend sections 111, 169, and 171 of the Clean Air Act to clarify when a physical change in, or change in the method of operation of, a stationary source constitutes a modification or construction, and for other purposes.1.Short titleThis Act may be cited as the New Source Review Permitting Improvement Act .2.Clarification of definition of a modification: emission rate increases, pollution control, efficiency, safety, and reliability projectsParagraph (4) of section 111(a) of the Clean Air Act ( 42 U.S.C. 7411(a) ) is amended—(1)by inserting(A) before The term ;(2)by inserting before the period at the end the following: . For purposes of the preceding sentence, a change increases the amount of any air pollutant emitted by such source only if the maximum hourly emission rate of an air pollutant that is achievable by such source after the change is higher than the maximum hourly emission rate of such air pollutant that was achievable by such source during any hour in the 10-year period immediately preceding the change ; and(3)by adding at the end the following:(B)Notwithstanding subparagraph (A), the term modification does not include a change at a stationary source that is designed—(i)to reduce the amount of any air pollutant emitted by the source per unit of production; or(ii)to restore, maintain, or improve the reliability of operations at, or the safety of, the source,except, with respect to either clause (i) or (ii), when the change would be a modification as defined in subparagraph (A) and the Administrator determines that the increase in the maximum achievable hourly emission rate of a pollutant from such change would cause an adverse effect on human health or the environment..3.Clarification of definition of construction for prevention of significant deteriorationSubparagraph (C) of section 169(2) of the Clean Air Act ( 42 U.S.C. 7479(2) ) is amended to read as follows:(C)The term construction , when used in connection with a major emitting facility, includes a modification (as defined in section 111(a)) at such facility, except that for purposes of this subparagraph a modification does not include a change at a major emitting facility that does not result in a significant emissions increase, or a significant net emissions increase, in annual actual emissions at such facility..4.Clarification of definition of modifications and modified for nonattainment areasParagraph (4) of section 171 of the Clean Air Act ( 42 U.S.C. 7501 ) is amended to read as follows:(4)The terms modifications and modified mean a modification as defined in section 111(a)(4), except that such terms do not include a change at a major emitting facility that does not result in a significant emissions increase, or a significant net emissions increase, in annual actual emissions at such facility..5.Rule of constructionNothing in this Act or the amendments made by this Act shall be construed to treat any change as a modification for purposes of any provision of the Clean Air Act ( 42 U.S.C. 7401 et seq. ) if such change would not have been so treated as of the day before the date of enactment of this Act.
Tracker
The tracker indicates the progress of this legislation as it moves through the legislative process.
- Introduced2025-01-03
- Passed House
- Passed Senate
- Conference
- To President
- Became Law
CRS Summary
The summaries are the Congressional Research Service’s, one per stage. Read them in full.
Introduced in House Jan 3, 2025
hb161/introduced-in-house.mdShown Here:
Introduced in House (01/03/2025)
New Source Review Permitting Improvement Act
This bill modifies terminology for purposes of the New Source Review (NSR) permitting program of the Environmental Protection Agency (EPA).
In order for a change to a stationary source to be a modification (a change to a stationary source that increases the air pollutant emissions or results in new pollutants) for purposes of the NSR permitting program, the maximum hourly emission rate achievable by such source must be higher than the maximum hourly rate achievable by such source during any hour in the 10-year period preceding the change.
A change at a stationary source is not considered to be a modification under the bill if it is designed to (1) reduce the amount of any air pollutant emitted; or (2) restore, maintain, or improve the reliability of operations at, or safety of, the source. However, such changes are not excepted if the EPA determines the increase in the maximum achievable hourly emission rate from such change would cause an adverse effect on human health or the environment.
Construction, in connection with a major emitting facility (a type of stationary source), does not include a change at such a facility that does not result in a significant emissions increase or a significant net emissions increase.
In relation to major emitting facilities in nonattainment areas, the terms modifications and modified do not include changes at such facilities that do not result in a significant emissions increase or a significant net emissions increase.
Sponsors
Rep. Morgan Griffith (R) sponsors H.R. 161, and 21 members have co-sponsored it.

Rep. · R–VA-9 · Sponsor
Introduced Jan 3, 2025

Rep. · R–ND-0 · Co-sponsor
Joined Nov 20, 2025

Rep. · R–CO-4 · Co-sponsor
Joined Feb 10, 2026

Rep. · R–TX-6 · Co-sponsor
Joined Feb 10, 2026

Rep. · R–AL-6 · Co-sponsor
Joined Feb 11, 2026

Rep. · R–TX-11 · Co-sponsor
Joined Feb 11, 2026

Rep. · R–NC-11 · Co-sponsor
Joined Feb 12, 2026

Rep. · R–PA-9 · Co-sponsor
Joined Feb 12, 2026

Rep. · R–IL-12 · Co-sponsor
Joined Feb 13, 2026

Rep. · R–WI-6 · Co-sponsor
Joined Feb 13, 2026
Committees
H.R. 161 went before 2 committees: Energy and Commerce and Environment Subcommittee.
Reports
1 committee report has been filed on H.R. 161, the latest H. Rept. 119-625.
- H. Rept. 119-625 — NEW SOURCE REVIEW PERMITTING IMPROVEMENT ACT
Actions
H.R. 161 has taken 9 actions since Jan 3, 2025, the latest on Apr 28, 2026.
| Chamber | Action | |||
|---|---|---|---|---|
Apr 28, 2026 | House | Reported (Amended) by the Committee on Energy and Commerce. H. Rept. 119-625.Energy and Commerce Committee | ||
Apr 28, 2026 | House | Placed on the Union Calendar, Calendar No. 542. | ||
Jan 21, 2026 | House | Committee Consideration and Mark-up Session HeldEnergy and Commerce Committee | ||
Jan 21, 2026 | House | Ordered to be Reported (Amended) by the Yeas and Nays: 28 - 23.Energy and Commerce Committee | ||
Dec 10, 2025 | House | Subcommittee Consideration and Mark-up Session HeldEnvironment Subcommittee |
Votes
H.R. 161 has not gone to a roll call.
Related bills
1 bill is related to H.R. 161.
Titles
H.R. 161 goes by 4 titles, 2 of them short titles.
- New Source Review Permitting Improvement Act — Display Title
- To amend sections 111, 169, and 171 of the Clean Air Act to clarify when a physical change in, or change in the method of operation of, a stationary source constitutes a modification or construction, and for other purposes. — Official Title as Introduced
- New Source Review Permitting Improvement Act — Short Title(s) as Reported to House
- New Source Review Permitting Improvement Act — Short Title(s) as Introduced
Lobbying
29 clients hired 29 firms and 249 registered lobbyists who named H.R. 161 in 104 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 Energy/Nuclear, Taxation/Internal Revenue Code, Budget/Appropriations, Transportation, Environment/Superfund, Homeland Security, Defense, Telecommunications.
Clients
Who paid to be heard, by how many filings named the bill. The 20 that filed most often, of 29.
Firms
Registrants who filed on the bill, by filings.
Lobbyists
Named on the filings that cite the bill. The 20 named most often, of 249.
| Lobbyist | Firms | Clients | Filings |
|---|---|---|---|
| MATTHEW MCGINLEY | 1 | 1 | 7 |
| CATHERINE HARTNETT | 1 | 1 | 6 |
| GERALD MULLINS | 1 | 1 | 6 |
| JENNIFER BONNER | 1 | 1 | 6 |
| JOSHUA REINER | 1 | 1 | 6 |
| JUSTIN PROSSER | 1 | 1 | 6 |
| MARTHA NEWELL | 1 | 1 | 6 |
| RICHARD RUSSELL | 1 | 1 | 6 |
| SEAN O'NEILL | 1 | 1 | 6 |
| ANNELISE FORSHEE | 1 | 1 | 5 |
| CHARLES JACKSON | 1 | 1 | 5 |
| DAISY GORDON | 1 | 1 | 5 |
| DREW PRESTON | 1 | 1 | 5 |
| ERIC GREY | 1 | 1 | 5 |
| JAMIE PAINTER | 1 | 1 | 5 |
| KRISTEN SIEGELE | 1 | 1 | 5 |
| LEE KWAME CANTY | 1 | 1 | 5 |
| LOUIS RENJEL | 1 | 1 | 5 |
| MICHAEL ELMORE | 1 | 1 | 5 |
| NICHOLAS JACKSON | 2 | 2 | 5 |
Filings
The documents themselves, on the Senate’s Lobbying Disclosure site, largest reported first.
| Client | Registrant | Period | Reported | Document |
|---|---|---|---|---|
| CHAMBER OF COMMERCE OF THE U.S.A. | CHAMBER OF COMMERCE OF THE U.S.A. | 2026 first_quarter | $19.8M | 1st Quarter - Amendme… |
| CHAMBER OF COMMERCE OF THE U.S.A. | CHAMBER OF COMMERCE OF THE U.S.A. | 2026 first_quarter | $19.8M | 1st Quarter - Report |
| CHAMBER OF COMMERCE OF THE U.S.A. | CHAMBER OF COMMERCE OF THE U.S.A. | 2025 fourth_quarter | $18M | 4th Quarter - Report |
| CHAMBER OF COMMERCE OF THE U.S.A. | CHAMBER OF COMMERCE OF THE U.S.A. | 2026 second_quarter | $17M | 2nd Quarter - Report |
| AMERICAN CHEMISTRY COUNCIL | AMERICAN CHEMISTRY COUNCIL | 2025 fourth_quarter | $6.8M | 4th Quarter - Report |
| AMERICAN CHEMISTRY COUNCIL | AMERICAN CHEMISTRY COUNCIL | 2026 first_quarter | $3.8M | 1st Quarter - Report |
| AMERICAN CHEMISTRY COUNCIL | AMERICAN CHEMISTRY COUNCIL | 2025 third_quarter | $3.5M | 3rd Quarter - Report |
| AMERICAN PETROLEUM INSTITUTE | AMERICAN PETROLEUM INSTITUTE | 2026 second_quarter | $2.8M | 2nd Quarter - Report |
| AMERICAN CHEMISTRY COUNCIL | AMERICAN CHEMISTRY COUNCIL | 2026 second_quarter | $2.6M | 2nd Quarter - Report |
| EDISON ELECTRIC INSTITUTE | EDISON ELECTRIC INSTITUTE | 2026 first_quarter | $2.6M | 1st Quarter - Amendme… |
| EDISON ELECTRIC INSTITUTE | EDISON ELECTRIC INSTITUTE | 2026 first_quarter | $2.6M | 1st Quarter - Report |
| EDISON ELECTRIC INSTITUTE | EDISON ELECTRIC INSTITUTE | 2025 fourth_quarter | $2.3M | 4th Quarter - Report |
| DUKE ENERGY CORPORATION | DUKE ENERGY CORPORATION | 2026 second_quarter | $2.3M | 2nd Quarter - Amendme… |
| DUKE ENERGY CORPORATION | DUKE ENERGY CORPORATION | 2026 second_quarter | $2.3M | 2nd Quarter - Report |
| DUKE ENERGY CORPORATION | DUKE ENERGY CORPORATION | 2026 first_quarter | $2.1M | 1st Quarter - Report |
| DUKE ENERGY CORPORATION | DUKE ENERGY CORPORATION | 2025 fourth_quarter | $2M | 4th Quarter - Report |
| DUKE ENERGY CORPORATION | DUKE ENERGY CORPORATION | 2025 fourth_quarter | $2M | 4th Quarter - Report |
| EDISON ELECTRIC INSTITUTE | EDISON ELECTRIC INSTITUTE | 2025 third_quarter | $2M | 3rd Quarter - Report |
| AMERICAN PETROLEUM INSTITUTE | AMERICAN PETROLEUM INSTITUTE | 2025 fourth_quarter | $1.9M | 4th Quarter - Report |
| AMERICAN PETROLEUM INSTITUTE | AMERICAN PETROLEUM INSTITUTE | 2026 first_quarter | $1.9M | 1st Quarter - Report |
Classification
The Congressional Research Service files H.R. 161 under Environmental Protection, one of its 31 policy areas, and gives it 6 legislative subjects.
CRS Subjects
CRS assigns every bill one policy area from its 31; H.R. 161’s is Environmental Protection.
hr161/policy-areas.txtLegislative Subjects
H.R. 161 carries 6 of CRS’s legislative subjects, from Air quality to Pollution liability.
hr161/subjects.txtConstitutional authority
The clause the sponsor cites as Congress’s power to enact H.R. 161, as entered in the Congressional Record.
[Congressional Record Volume 171, Number 1 (Friday, January 3, 2025)][House]From the Congressional Record Online through the Government Publishing Office [www.gpo.gov]By Mr. GRIFFITH:H.R. 161.Congress has the power to enact this legislation pursuantto the following:Article I, Section 8, Clause 18The single subject of this legislation is:Clean Air Act permitting[Page H41]
Source: congress.gov · legiscan.com
