Nuclear Policy Tracker
State Legislation & Regulatory Actions
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← Legislators

Hirono, Mazie K.

Current

U.S. Senator · Democratic · HI

Served 2007–present

(202) 224-6361109 Hart Senate Office Building Washington, DC 20510
Official website ↗

Committee Assignments

Senate Committee on Armed ServicesmemberSenate Committee on Energy and Natural ResourcesmemberSenate Committee on Small Business and EntrepreneurshipmemberSenate Committee on Veterans' AffairsmemberSenate Committee on the JudiciarymemberBorder Security and ImmigrationmemberEnergymemberFederal Courts, Oversight, Agency Action, and Federal RightsmemberIntellectual PropertymemberNational ParksmemberPersonnelmemberPublic Lands, Forests, and MiningmemberReadiness and Management Supportranking memberSeapowermemberthe Constitutionmember

Legislative Activity

78 bills/resolutions

Bills and resolutions this member sponsored, cosponsored, or that were referred to a committee they sit on.

S 4495
Reactors at Risk Act of 2026
2026-05-12
Committee referralS 4284
Nuclear Energy Innovation and Deployment Act of 2026
2026-04-14
Committee referralS 4267
Strengthening American Nuclear Energy Act of 2026
2026-03-26
Committee referral
SRES 651
A resolution honoring the USS Massachusetts (SSN-798) Virginia Class nuclear submarine and her crew on the historic occasion of her commissioning, on March 28, 2026.
2026-03-19
Committee referral
S 3106
No Nuclear Testing Without Approval Act
2025-11-05
Committee referralS 3090
No Nuclear Testing Act of 2025
2025-10-30
Committee referralS 3053
A bill to require a plan to modernize the nuclear security enterprise.
2025-10-23
Committee referralS 3016
Advancing Research in Nuclear Fuel Recycling Act of 2025
2025-10-16
Committee referralS 2930
Smarter Approaches to Nuclear Expenditures Act
2025-09-29
Committee referralS 1328
Nuclear Family Priority Act
2025-04-08
Committee referral
SRES 918
A resolution designating December 2, 2024, as "World Nuclear Energy Day".
2024-12-02
Committee referral
SRES 889
A resolution designating October 30, 2024, as a national day of remembrance for the workers of the nuclear weapons program of the United States.
2024-09-25
Committee referral
S 5157
Advancing Research in Nuclear Fuel Recycling Act of 2024
2024-09-24
Committee referral
SRES 321
A resolution expressing the sense of the Senate relating to nuclear power and the commitment of the Senate to embracing and promoting nuclear power as a clean baseload energy source necessary to achieve a reliable, secure, and diversified electric grid.
2023-07-27
Committee referral
S 2017
Sentinel Nuclear Deterrence Act of 2023
2023-06-15
Committee referralS 1754
Smarter Approaches to Nuclear Expenditures Act
2023-05-30
Committee referralS 1394
Block Nuclear Launch by Autonomous Artificial Intelligence Act of 2023
2023-05-01
Committee referralS 1112
Department of Energy and Nuclear Regulatory Commission Whistleblower Protection Act
2023-03-30
Committee referralS 763
Reduce Russian Uranium Imports Act
2023-03-09
Committee referralS 571
A bill to require reports on the dangers posed by nuclear reactors in areas that might experience armed conflict.
2023-02-28
Committee referralS 452
Nuclear Fuel Security Act of 2023
2023-02-15
Committee referral
SRES 785
A resolution designating October 30, 2022, as a national day of remembrance for the workers of the nuclear weapons program of the United States.
2022-09-20
Committee referral
S 4066
Fueling Our Nuclear Future Act of 2022
2022-04-07
Committee referralS 3856
A bill to prohibit the importation of uranium from the Russian Federation.
2022-03-16
Committee referral
SJRES 40
A joint resolution formally apologizing for the nuclear legacy of the United States in the Republic of the Marshall Islands and affirming the importance of the free association between the Government of the United States and the Government of the Marshall Islands.
2022-03-01
Sponsor
S 3428
Fission for the Future Act
2021-12-16
Committee referral
SRES 438
A resolution designating October 30, 2021, as a national day of remembrance for the workers of the nuclear weapons program of the United States.
2021-11-03
Committee referral
SRES 434
A resolution designating October 30, 2021, as a national day of remembrance for the workers of the nuclear weapons program of the United States.
2021-10-28
Committee referral
S 2896
Department of Energy and Nuclear Regulatory Commission Whistleblower Protection Act
2021-09-29
Committee referralHR 5376
Inflation Reduction Act of 2022
2021-09-27
Committee referralS 1862
Smarter Approaches to Nuclear Expenditures Act
2021-05-26
Committee referral
SRES 673
A resolution affirming that the New START Treaty extension will cover new deployed Russian nuclear delivery systems, and supporting additional initiatives to engage China that advance the goal of concluding an arms control treaty or agreement.
2020-08-06
Cosponsor
S 4099
No Nuclear Testing Without Approval Act
2020-06-29
Committee referralS 2727
Smarter Approaches to Nuclear Expenditures Act
2019-10-29
Committee referral
SRES 377
A resolution designating October 30, 2019, as a national day of remembrance for the workers of the nuclear weapons program of the United States.
2019-10-24
Committee referral
S 2368
Nuclear Energy Renewal Act of 2019
2019-07-31
Committee referralS 1330
Department of Energy and Nuclear Regulatory Commission Whistleblower Protection Act of 2019
2019-05-06
Committee referralS 1234
Nuclear Waste Administration Act of 2019
2019-04-30
Committee referralS 903
Nuclear Energy Leadership Act
2019-03-27
Committee referralHR 1760
Advanced Nuclear Fuel Availability Act
2019-03-14
Committee referral
SRES 24
A resolution supporting a robust and modern ICBM force to maximize the value of the nuclear triad of the United States.
2019-01-17
Committee referral
S 3422
Nuclear Energy Leadership Act
2018-09-06
Committee referralHR 6140
Advanced Nuclear Fuel Availability Act
2018-06-19
Committee referralS 2968
Department of Energy and Nuclear Regulatory Commission Whistleblower Protection Act of 2018
2018-05-24
Committee referralHR 4378
Nuclear Energy Research Infrastructure Act of 2018
2017-11-13
Committee referralS 1457
Advanced Nuclear Energy Technologies Act
2017-06-28
Committee referralS 1235
Smarter Approach to Nuclear Expenditures Act
2017-05-25
Committee referral
SCONRES 10
A concurrent resolution expressing the sense of Congress that the Secretary of the Navy should name the next nuclear powered submarine of the United States Navy the "USS Los Alamos".
2017-03-21
Committee referral
S 574
Nuclear Cruise Missile Reconsideration Act of 2017
2017-03-08
Committee referral
SRES 25
A resolution designating January 27, 2017, as a national day of remembrance for people of the United States who, during the Cold War, worked and lived downwind from nuclear testing sites and were adversely affected by the radiation exposure generated by the above ground nuclear weapons testing.
2017-01-24
Committee referral
S 97
Nuclear Energy Innovation Capabilities Act of 2017
2017-01-11
Committee referral
SRES 633
A resolution expressing the sense of the Senate on the plan of the Department of Defense and the Department of Energy for modernizing the nuclear weapons of the United States.
2016-12-09
Committee referral
SRES 560
A resolution designating October 30, 2016, as a national day of remembrance for nuclear weapons program workers.
2016-09-15
Committee referral
HR 4979
Advanced Nuclear Technology Development Act of 2016
2016-04-18
Committee referralS 2461
Nuclear Energy Innovation Capabilities Act
2016-01-21
Committee referralHR 4084
Nuclear Energy Innovation Capabilities Act
2015-11-19
Committee referralS 1825
Nuclear Waste Informed Consent Act
2015-07-22
Committee referral
SRES 213
A resolution designating October 30, 2015, as a national day of remembrance for nuclear weapons program workers.
2015-06-24
Committee referral
S 1428
Excess Uranium Transparency and Accountability Act
2015-05-21
Committee referralS 1363
A bill to require the Secretary of Energy to submit to Congress a report assessing the capability of the Department of Energy to authorize, host, and oversee privately funded fusion and fission reactor prototypes and related demonstration facilities at sites owned by the Department of Energy.
2015-05-18
Committee referralS 1318
Nuclear Terrorism Conventions Implementation and Safety of Maritime Navigation Act of 2015
2015-05-13
Committee referralS 854
Nuclear Waste Administration Act of 2015
2015-03-24
Committee referralS 831
Smarter Approach to Nuclear Expenditures Act
2015-03-23
Committee referral
SRES 417
A resolution designating October 30, 2014, as a national day of remembrance for nuclear weapons program workers.
2014-04-08
Committee referral
S 2070
Smarter Approach to Nuclear Expenditures Act
2014-02-27
Committee referralS 1240
Nuclear Waste Administration Act of 2013
2013-06-27
Committee referral
SRES 164
A resolution designating October 30, 2013, as a national day of remembrance for nuclear weapons program workers.
2013-06-10
Committee referral
HR 1073
Nuclear Terrorism Conventions Implementation and Safety of Maritime Navigation Act of 2013
2013-03-12
Committee referralS 3469
Nuclear Waste Administration Act of 2012
2012-08-01
Committee referral
SRES 519
A resolution designating October 30, 2012, as a national day of remembrance for nuclear weapons program workers.
2012-07-16
Committee referral
HR 5889
Nuclear Terrorism Conventions Implementation and Safety of Maritime Navigation Act of 2012
2012-06-05
Committee referralS 2176
Nuclear Waste Fund Relief and Rebate Act
2012-03-08
Committee referral
HRES 568
Expressing the sense of the House of Representatives regarding the importance of preventing the Government of Iran from acquiring a nuclear weapons capability.
2012-03-01
Cosponsor
SRES 275
A resolution designating October 30, 2011, as a national day of remembrance for nuclear weapons program workers.
2011-09-22
Committee referral
S 1067
Nuclear Energy Research Initiative Improvement Act of 2011
2011-05-25
Committee referralHR 1242
Nuclear Power Plant Safety Act of 2011
2011-03-29
CosponsorS 512
Nuclear Power 2021 Act
2011-03-08
Committee referralS 342
Republic of the Marshall Islands Supplemental Nuclear Compensation Act of 2011
2011-02-14
Committee referral

Voting Record

HR 1: On Passage of the Bill
2025-07-01
nay
HR 1: On the Motion
2025-07-01
yea
HR 1: On the Motion
2025-07-01
yea
HR 1: On the Motion
2025-07-01
yea
HR 1: On the Motion
2025-06-30
yea
HR 1: On the Motion
2025-06-30
yea
HR 1: On the Motion
2025-06-30
yea
HR 1: On the Motion
2025-06-30
yea
HR 1: On the Motion
2025-06-30
yea
HR 1: On the Motion
2025-06-30
yea
HR 1: On the Motion
2025-06-30
yea
HR 1: On the Motion
2025-06-30
yea
HR 1: On the Motion
2025-06-30
yea
HR 1: On the Motion
2025-06-30
yea
HR 1: On the Motion
2025-06-30
yea
HR 1: On the Motion
2025-06-30
yea
HR 1: On the Motion
2025-06-30
nay
HR 1: On the Motion
2025-06-30
yea
HR 1: On the Motion
2025-06-30
yea
HR 1: On the Decision of the Chair
2025-06-30
nay
HR 1: On the Motion to Proceed
2025-06-28
nay