Photo of Mazie K. Hirono
D United States Senate · Hawaii

Sen. Mazie K. Hirono

Compare
Total votes
1,054
all sessions
Attendance
100%
of floor votes
Higher than 92% of chamber peers
With party
97%
of cast votes
Near the chamber average
Bipartisan score
2%
crosses aisle rarely
Near the chamber average
Sponsored
1,735
bills & resolutions
Higher than 82% of chamber peers
Committees
15
assignments
1,735 bills and resolutions

Sponsored bills

Total
1,735
Primary
192
Co-sponsor
1,543
This page
1,735
matching current filters
Primary S 85
In committee · United States Senate · Lead sponsor
Continued Rapid Ohia Death Response Act of 2025

Maddy summaryS 85 authorizes $5 million annually from 2026 to 2036 to address Rapid Ohia Death, a fungus killing over 1 million native ohia trees in Hawaii. The bill directs federal agencies (Interior and Agriculture Departments) to collaborate with Hawaii state officials on research, preventing the fungus's spread, managing animals that spread it, and propagating resistant trees for forest restoration. It specifically funds ongoing efforts like studying how the fungus spreads, partnering with local groups on land management, and supporting the Institute of Pacific Islands Forestry for research. This funding directly supports Hawaii's native ecosystems and communities reliant on them.

In committee Jan 14, 2025 0 co-sponsors
Co-sponsor SRES 20
In committee · United States Senate · Co-sponsor
A resolution supporting the goals and ideals of Korean American Day.

Maddy summarySRES 20 is a symbolic Senate resolution supporting Korean American Day, commemorating the January 13, 1903 arrival of the first large wave of Korean immigrants to the U.S. It urges all Americans to observe the day to recognize Korean Americans' contributions to U.S. society, including their economic, cultural, and military impacts. The resolution formally honors the 122nd anniversary of this immigration milestone and reaffirms prior bipartisan resolutions (H.Res. 487 and S.Res. 283) from 2005. As a non-binding commemorative measure, it does not create new laws or alter policies.

In committee Jan 13, 2025 1 co-sponsor
Co-sponsor SRES 19
Passed · United States Senate · Co-sponsor
A resolution honoring the life and legacy of President Jimmy Carter and commending President Jimmy Carter for his life-long career of public service, humanitarian leadership, diplomacy, and courageous advocacy.

Maddy summarySRES 19 is a Senate resolution honoring former President Jimmy Carter's life and legacy, commending his decades of public service, humanitarian work, and diplomatic achievements including the Camp David Accords and founding The Carter Center. The resolution specifically recognizes his Nobel Peace Prize, efforts to combat diseases like Guinea worm, and 30+ years of Habitat for Humanity homebuilding. It formally mourns his passing and extends condolences to his family, while highlighting his role in establishing U.S.-China diplomatic relations and creating the Departments of Education and Energy. As a symbolic resolution with no policy impact, it directly affects no individuals or entities but serves as a formal Senate tribute to Carter's historical contributions.

Passed Jan 9, 2025 1 co-sponsor
Co-sponsor S 46
In committee · United States Senate · Co-sponsor
Health Care Affordability Act of 2025

Maddy summaryThis bill adjusts tax credit rules for health insurance under the Affordable Care Act to make coverage more affordable for lower-income households. It replaces a flat income threshold with a sliding scale, reducing the percentage of income people pay for premiums based on their household income relative to the poverty line (e.g., 0% for incomes up to 150% of poverty, rising to 8.5% at 400%+). The change directly affects individuals buying insurance through health insurance marketplaces who qualify for tax credits. It takes effect for tax years beginning after 2025, modifying how the IRS calculates subsidy eligibility.

In committee Jan 9, 2025 1 co-sponsor
Co-sponsor S 40
In committee · United States Senate · Co-sponsor
Commission to Study and Develop Reparation Proposals for African Americans Act

Maddy summaryThis bill establishes a 13-member Commission to study the historical and ongoing impacts of slavery and discrimination on African Americans, and to develop reparation proposals. The Commission will examine the institution of slavery from 1619-1865, discriminatory practices like redlining and Jim Crow, and current disparities in wealth, incarceration, and employment. It will identify evidence of these harms, study their lingering effects, and recommend educational approaches and potential remedies, including compensation calculations and eligibility. The Commission must submit its findings and recommendations to Congress within one year of its first meeting. The bill authorizes $12 million for the Commission's work and requires it to terminate 90 days after submitting its report.

In committee Jan 9, 2025 1 co-sponsor
Co-sponsor S 51
In committee · United States Senate · Co-sponsor
Washington, D.C. Admission Act

Maddy summaryThe Washington, D.C. Admission Act would admit Washington, D.C. as a new state called "Washington, Douglass Commonwealth," granting it full representation with two U.S. Senators and one U.S. Representative. The bill would establish the new state's boundaries, with the area serving as the seat of government (the "Capital") remaining under federal jurisdiction for specific purposes. It would repeal the District of Columbia's congressional delegate position and its participation in presidential elections, while providing for a transition period overseen by a Statehood Transition Commission to handle the shift from district to state governance.

In committee Jan 9, 2025 1 co-sponsor
Co-sponsor S 4199
Vetoed · United States Senate · Co-sponsor
JUDGES Act of 2024

Maddy summaryThis bill adds new federal district court judgeships to address growing case backlogs. It authorizes 66 permanent judgeships to be appointed starting in 2025 (with an additional 34 in 2029) across specific districts in Arizona, California, Texas, Florida, Georgia, New York, and others, based on current caseload data. It also creates temporary judgeships for Oklahoma districts (Eastern and Northern) that expire after five years if vacancies occur. The bill aims to reduce the average of 491 cases per judgeship by increasing staffing in overburdened courts, as identified by the Judicial Conference.

Vetoed Jan 3, 2025 1 co-sponsor
Co-sponsor S 1723
Passed · United States Senate · Co-sponsor
Truth and Healing Commission on Indian Boarding School Policies Act of 2024

Maddy summaryThe Truth and Healing Commission on Indian Boarding School Policies Act of 2024 would establish a federal commission to investigate and document the historical impacts of Indian boarding school policies on American Indian, Alaska Native, and Native Hawaiian communities. The Commission would hold public hearings for survivors, families, and tribal representatives, work to locate unmarked graves and document records from these schools, and develop recommendations for healing and preventing similar practices today. It would include 10 diverse members representing tribal communities, experts in boarding school history, and healing practitioners, with an Advisory Committee composed of tribal organizations and survivors. The Commission would issue an initial report within three years and a final report within five years, making recommendations for federal action to address historical trauma and support mental health and cultural healing. This bill focuses on documenting the government's role in cultural termination and developing concrete steps for acknowledgment and healing.

Passed Dec 24, 2024 1 co-sponsor
Co-sponsor S 3998
Signed into law · United States Senate · Co-sponsor
Federal Judiciary Stabilization Act of 2024

Maddy summaryThe Federal Judiciary Stabilization Act of 2024 makes permanent 10 temporary federal district court judgeships in specific judicial districts, including Hawaii, Kansas, and multiple districts across Alabama, Arizona, California, Florida, Missouri, New Mexico, North Carolina, and Texas. It achieves this by amending federal law to treat these positions as permanent, so current judges in those roles will now hold their positions under permanent authority rather than temporary appointments. The bill also updates the official U.S. Code table listing authorized judgeships to reflect these new permanent numbers for each district. This directly affects the federal courts in the specified districts by ending the temporary status of these judgeships and providing long-term stability to their staffing.

Signed into law Dec 23, 2024 1 co-sponsor
Co-sponsor S 4974
Passed · United States Senate · Co-sponsor
A bill to amend the John D. Dingell, Jr. Conservation, Management, and Recreation Act to reauthorize the National Volcano Early Warning and Monitoring System, and for other purposes.

Maddy summaryThis bill reauthorizes and updates the National Volcano Early Warning and Monitoring System through the John D. Dingell Act. It increases annual funding from $55 million to $75 million, extends the program's authorization period to 2033-2034, and modernizes technical language (replacing "Global Positioning System" with "Global Navigation Satellite System"). Key provisions include requiring management plan updates every 5 years, creating a new implementation committee with state agencies, universities, and volcano observatories, and strengthening coordination with the Forest Service. The changes directly affect U.S. Geological Survey operations and volcano monitoring at active sites, improving early warning capabilities for communities near volcanoes.

Passed Dec 20, 2024 1 co-sponsor
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