← Legislators
Lummis, Cynthia M.
CurrentU.S. Senator · Republican · WY
Served 2009–present
(202) 224-3424127A Russell Senate Office Building Washington, DC 20510
Official website ↗Committee Assignments
Senate Committee on Banking, Housing, and Urban AffairsmemberSenate Committee on Commerce, Science, and TransportationmemberSenate Committee on Environment and Public WorksmemberClean Air, Climate, and Nuclear Innovation and SafetychairConsumer Protection, Technology, and Data PrivacymemberDigital AssetschairFinancial Institutions and Consumer ProtectionmemberFisheries, Water, and WildlifememberScience, Manufacturing, and CompetitivenessmemberSecurities, Insurance, and InvestmentmemberTelecommunications and MediamemberTransportation and Infrastructuremember
Legislative Activity
60 bills/resolutionsBills and resolutions this member sponsored, cosponsored, or that were referred to a committee they sit on.
S 5254
Civil Nuclear Export Act of 2026
Committee referralS 52492026-08-05
MORE American Fuel Act of 2026
CosponsorS 45292026-08-05
Build Nuclear with Local Materials Act of 2026
SponsorS 42282026-05-14
ACE Nuclear Energy Act of 2026
Committee referralS 42672026-03-26
Strengthening American Nuclear Energy Act of 2026
SponsorS 34412026-03-26
Nuclear Plant Decommissioning Act of 2025
Committee referral2025-12-11
SRES 536
S 2161A resolution designating December 2, 2025, as "World Nuclear Energy Day".
Cosponsor2025-12-08
NRC Office of Public Engagement and Participation Act of 2025
Committee referralS 20822025-06-25
Nuclear REFUEL Act of 2025
Committee referralS 17572025-06-12
Efficient Nuclear Licensing Hearings Act
Committee referralS 13282025-05-14
Nuclear Family Priority Act
CosponsorS 1012025-04-08
Nuclear Waste Informed Consent Act
Committee referral2025-01-15
SRES 918
S 5406A resolution designating December 2, 2024, as "World Nuclear Energy Day".
Cosponsor2024-12-02
NRC Office of Public Engagement and Participation Act of 2024
Committee referral2024-12-02
SRES 717
S 4288A resolution calling on the Biden Administration to pursue censure of Iran at the International Atomic Energy Agency (IAEA), refer the issue to the United Nations Security Council, and reaffirm that all measures will be taken to prevent the regime in Iran from acquiring nuclear weapons.
Cosponsor2024-06-03
Efficient Nuclear Licensing Hearings Act
Committee referralS 41512024-05-08
Fusion Energy Act of 2024
Committee referralS 20172024-04-17
Sentinel Nuclear Deterrence Act of 2023
CosponsorS 19282023-06-15
Civil Nuclear Export Act of 2023
Committee referralS 16812023-06-12
Uranium Miners and Workers Act of 2023
SponsorS 7632023-05-18
Reduce Russian Uranium Imports Act
CosponsorS 4722023-03-09
Iran Nuclear Treaty Act
CosponsorS 4042023-02-16
Nuclear Waste Informed Consent Act
Committee referralS 38562023-02-14
A bill to prohibit the importation of uranium from the Russian Federation.
CosponsorS 37412022-03-16
A bill to prohibit the use of Federal funds for the private interim storage of spent nuclear fuel, and for other purposes.
Committee referralS 28712022-03-02
Nuclear Waste Task Force Act of 2021
Committee referralHR 53762021-09-28
Inflation Reduction Act of 2022
Committee referralS 23732021-09-27
American Nuclear Infrastructure Act of 2021
Committee referralS 20302021-07-15
Iran Nuclear Treaty Act
CosponsorS 5412021-06-10
Nuclear Waste Informed Consent Act
Committee referral2021-03-02
SRES 72
S 4897A resolution opposing the lifting of sanctions imposed with respect to Iran without addressing the full scope of Iran's malign activities, including its nuclear program, ballistic and cruise missile capabilities, weapons proliferation, support for terrorism, hostage-taking, gross human rights violations, and other destabilizing activities.
Cosponsor2021-02-24
American Nuclear Infrastructure Act of 2020
Committee referralS 48902020-11-16
Nuclear Plant Decommissioning Act of 2020
Committee referralS 29172020-11-10
Nuclear Waste Policy Amendments Act of 2019
Committee referralS 23382019-11-20
Preventing Nuclear Proliferation in Saudi Arabia Act of 2019
Committee referralS 6492019-07-30
Nuclear Waste Informed Consent Act
Committee referralS 23882019-03-05
Nuclear Plant Decommissioning Act of 2018
Committee referralHR 30532018-02-07
Nuclear Waste Policy Amendments Act of 2018
Committee referralHR 13202017-06-26
Nuclear Utilization of Keynote Energy Act
Committee referralS 5122017-03-02
Nuclear Energy Innovation and Modernization Act
Committee referralHR 5902017-03-02
Advanced Nuclear Technology Development Act of 2017
Committee referralS 952017-01-20
Nuclear Waste Informed Consent Act
Committee referralS 29882017-01-11
A bill to extend the sunset of the Iran Sanctions Act of 1996 in order to effectuate the Joint Comprehensive Plan of Action in guaranteeing that all nuclear material in Iran remains in peaceful activities.
Committee referralS 27952016-05-25
Nuclear Energy Innovation and Modernization Act
Committee referralHR 25442016-04-13
Excess Uranium Transparency and Accountability Act
SponsorS 9642015-05-21
Nuclear Plant Decommissioning Act of 2015
Committee referralS 7922015-04-15
Nuclear Weapon Free Iran Act of 2015
Committee referralS 6912015-03-18
Nuclear Waste Informed Consent Act
Committee referralHR 11912015-03-10
Iran Nuclear Agreement Review Act of 2015
CosponsorS 2692015-03-02
Nuclear Weapon Free Iran Act of 2015
Committee referralS 582015-01-27
Nuclear Regulatory Commission Reorganization Plan Codification and Complements Act
Committee referralS 23262015-01-07
Nuclear Plant Decommissioning Act of 2014
Committee referralS 17652014-05-13
Iran Nuclear Compliance Act of 2013
Committee referralS 15192013-11-21
Nuclear Regulatory Commission Reorganization Plan Codification and Complements Act
Committee referral2013-09-18
HRES 98
HR 850Expressing support for Israel and its right to self-defense against the illegal nuclear program by the Islamic Republic of Iran.
Cosponsor2013-03-05
Nuclear Iran Prevention Act of 2013
Cosponsor2013-02-27
HRES 568
S 1394Expressing the sense of the House of Representatives regarding the importance of preventing the Government of Iran from acquiring a nuclear weapons capability.
Cosponsor2012-03-01
A bill to allow a Commissioner of the Nuclear Regulatory Commission to continue to serve on the Commission if a successor is not appointed and confirmed in a timely manner.
Committee referralS 13202011-07-20
Nuclear Fuel Storage Improvement Act of 2011
Committee referral2011-06-30
HRES 271
Expressing support for the State of Israel's right to defend Israeli sovereignty, to protect the lives and safety of the Israeli people, and to use all means necessary to confront and eliminate nuclear threats posed by the Islamic Republic of Iran, including the use of military force if no other peaceful solution can be found within reasonable time to protect against such an immediate and existential threat to the State of Israel.
Cosponsor2011-05-23
Voting Record
HR 1: On Passage of the Bill
yea2025-07-01
HR 1: On the Motion
nay2025-07-01
HR 1: On the Motion
nay2025-07-01
HR 1: On the Motion
nay2025-07-01
HR 1: On the Motion
nay2025-06-30
HR 1: On the Motion
nay2025-06-30
HR 1: On the Motion
nay2025-06-30
HR 1: On the Motion
nay2025-06-30
HR 1: On the Motion
nay2025-06-30
HR 1: On the Motion
nay2025-06-30
HR 1: On the Motion
nay2025-06-30
HR 1: On the Motion
nay2025-06-30
HR 1: On the Motion
nay2025-06-30
HR 1: On the Motion
nay2025-06-30
HR 1: On the Motion
nay2025-06-30
HR 1: On the Motion
nay2025-06-30
HR 1: On the Motion
yea2025-06-30
HR 1: On the Motion
nay2025-06-30
HR 1: On the Motion
nay2025-06-30
HR 1: On the Decision of the Chair
yea2025-06-30
HR 1: On the Motion to Proceed
yea2025-06-28