I 
119TH CONGRESS 
1ST SESSION H. R. 4403 
To prohibit weather modification within the United States, and for other 
purposes. 
IN THE HOUSE OF REPRESENTATIVES 
JULY 15, 2025 
Ms. GREENE of Georgia introduced the following bill; which was referred to 
the Committee on Energy and Commerce 
A BILL 
To prohibit weather modification within the United States, 
and for other purposes. 
Be it enacted by the Senate and House of Representa-
tives of the United States of America in Congress assembled, 
SECTION 1. SHORT TITLE. 
This Act may be cited as the ‘‘Clear Skies Act’’. 
SEC. 2. PROHIBITION OF WEATHER MODIFICATION. 
(a) IN GENERAL.—Whoever, in any circumstance de-
scribed in subsection (b), knowingly conducts weather 
modification in the United States, including the territories 
and possessions of the United States, shall be subject to 
the penalties described in subsection (c). 
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(b) CIRCUMSTANCES DESCRIBED.—For the purposes 
of subsection (a), the circumstances described in this sub-
section are that— 
(1) the defendant traveled in interstate or for-
eign commerce, or traveled using a means, channel, 
facility, or instrumentality of interstate or foreign 
commerce, in furtherance of or in connection with 
the conduct described in subsection (a); 
(2) the defendant used a means, channel, facil-
ity, or instrumentality of interstate or foreign com-
merce in furtherance of or in connection with the 
conduct described in subsection (a); 
(3) the defendant transmitted in interstate or 
foreign commerce any communication relating to or 
in furtherance of the conduct described in subsection 
(a) using any means, channel, facility, or instrumen-
tality of interstate or foreign commerce or in or af-
fecting interstate or foreign commerce by any means 
or in any manner, including by computer, mail, wire, 
or electromagnetic transmission; 
(4) the conduct described in subsection (a) oc-
curred within the special maritime and territorial ju-
risdiction of the United States, the special aircraft 
jurisdiction of the United States, or any territory or 
possession of the United States; or 
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(5) the conduct described in subsection (a) oth-
erwise occurred in or affected interstate or foreign 
commerce. 
(c) PENALTIES.— 
(1) CRIMINAL
PENALTY.—Whoever violates 
subsection (a) shall be fined not more than 
$100,000 for each violation, imprisoned not more 
than 5 years, or both. 
(2) CIVIL PENALTY.—The Administrator of the 
Environmental Protection Agency may, in coordina-
tion with the Administrator of the Federal Aviation 
Administration, impose a civil penalty of not more 
than $10,000 for each violation of subsection (a), in 
addition to any other penalties provided by law. 
(3) REPEAT VIOLATIONS.—Each instance of in-
jection, release, emission, or dispersal under sub-
section (a) shall constitute a separate violation of 
such section. 
SEC. 3. REPORTING AND INVESTIGATION. 
(a) PUBLIC REPORTING.— 
(1) ESTABLISHMENT OF SYSTEM.—The Admin-
istrator of the Environmental Protection Agency, in 
coordination with the Administrator of the Federal 
Aviation Administration and the Administrator of 
the National Oceanic and Atmospheric Administra-
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tion, shall establish a system for the public to report 
suspected violations of section 2. 
(2) SUBMISSION
OF
REPORTS.—Such system 
may collect reports via telephone, email, mail, or an 
online portal. 
(3) PUBLICATION OF REPORTS.—The Adminis-
trator of the Environmental Protection Agency shall 
make publicly available on the website of the Envi-
ronmental Protection Agency any reports collected 
by such system under this subsection. 
(b) INVESTIGATION.— 
(1) IN
GENERAL.—The Administrator of the 
Environmental Protection Agency shall investigate 
suspected violations of section 2 reported under sub-
section (a) that the Administrator determines war-
rant further review. 
(2) DETERMINATION.— 
(A) REQUIREMENT.—For any suspected 
violation investigated under paragraph (1), the 
Administrator shall determine whether a viola-
tion of section 2 has occurred. 
(B) 
COORDINATION.—In 
determining 
whether a violation of section 2 occurred, the 
Administrator of the Environmental Protection 
Agency may coordinate with the Secretary of 
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Agriculture, the Secretary of the Interior, the 
Administrator of the Federal Aviation Adminis-
tration, the Administrator of the National Aero-
nautics and Space Administration, the Adminis-
trator of the National Oceanic and Atmospheric 
Administration, or the head of any other Fed-
eral agency that the Administrator of the Envi-
ronmental Protection Agency determines to be 
relevant, to verify the nature of any activities 
described in a report submitted under sub-
section (a). 
(c) REFERRAL TO DOJ.—The Administrator of the 
Environmental Protection Agency shall refer a suspected 
violation that the Administrator determines to have oc-
curred under subsection (b)(2) to the Attorney General 
of the United States for further action. 
SEC. 4. REPEAL OF EXISTING AUTHORITIES. 
(a) FEDERAL STATUTES.—Any provision of a Fed-
eral statute authorizing or requiring weather modification, 
including a licensing requirement or permit for any such 
weather modification, is hereby repealed. 
(b) FEDERAL REGULATIONS
OR EXECUTIVE OR-
DERS.—Any provision of a Federal regulation or executive 
order authorizing or requiring weather modification, in-
cluding a licensing requirement or permit for any such 
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weather modification, is hereby nullified and shall have no 
force or effect. 
SEC. 5. DEFINITIONS. 
In this Act: 
(1) ATMOSPHERE.—The term ‘‘atmosphere’’ 
means the gaseous envelope surrounding the Earth, 
including all airspace within the territorial jurisdic-
tion of the United States. 
(2) WEATHER MODIFICATION.— 
(A) IN
GENERAL.—The term ‘‘weather 
modification’’ means any injection, release, 
emission, or dispersal of a chemical, a chemical 
compound, or a substance, or conveyance of an 
apparatus, into the atmosphere for the express 
purpose of— 
(i) producing an artificial change in 
the composition, behavior, or dynamics of 
the atmosphere; or 
(ii) affecting the temperature, weath-
er, climate, or intensity of sunlight. 
(B) EXAMPLES.—Such term includes— 
(i) geoengineering; 
(ii) cloud seeding; 
(iii) solar radiation modification and 
management; and 
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(iv) a release of an aerosol into the at-
mosphere to influence temperature, pre-
cipitation, or the intensity of sunlight. 
SEC. 6. EFFECTIVE DATE. 
This Act shall take effect 90 days after the date of 
enactment of this Act. 
Æ 
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