Photo of Markwayne Mullin
R United States Senate · Oklahoma

Sen. Markwayne Mullin

Compare
Total votes
1,513
all sessions
Attendance
90%
155 missed
Lower than 97% of chamber peers
With party
94%
of cast votes
Near the chamber average
Bipartisan score
3%
crosses aisle rarely
Near the chamber average
Sponsored
807
bills & resolutions
Lower than 93% of chamber peers
Committees
0
assignments
807 bills and resolutions

Sponsored bills

Total
807
Primary
70
Co-sponsor
737
This page
807
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Primary S 550
Passed · United States Senate · Lead sponsor
A bill to provide for the equitable settlement of certain Indian land disputes regarding land in Illinois, and for other purposes.

Maddy summaryThis bill (S 550) establishes a one-year window for the Miami Tribe of Oklahoma to file a land claim in the U.S. Court of Federal Claims regarding land in Illinois, based on the 1805 Treaty of Grouseland. The court would hear this claim without considering standard time limits or delay-based defenses. All other land claims by the tribe, its members, or descendants to Illinois land would be permanently ended by this bill. The measure directly affects the Miami Tribe's legal standing regarding Illinois land disputes and removes all other potential claims.

Passed Dec 16, 2025 0 co-sponsors
Co-sponsor S 3478
In committee · United States Senate · Co-sponsor
Indian Buffalo Management Act

Maddy summaryThis bill authorizes the U.S. Department of the Interior to provide funding, contracts, and technical assistance to Indian Tribes and Tribal organizations for buffalo restoration and management on tribal lands. It requires the Department to consult with tribes on buffalo-related initiatives and allows tribes to receive surplus buffalo from federal land without cost. The law supports tribes in using buffalo for cultural preservation, subsistence, and economic development through programs like meat processing and habitat management. It explicitly protects tribal treaty rights and mandates that all actions align with tribal laws and management plans.

In committee Dec 15, 2025 1 co-sponsor
Co-sponsor S 1991
In committee · United States Senate · Co-sponsor
Delivering On Government Efficiency in Spending Act

Maddy summaryThis bill requires federal agencies to report detailed payment information - including the purpose, funding source, and payment type - to the Treasury before disbursing funds. It mandates agencies to verify recipient bank account details and cross-check payment records to prevent errors or fraud. The Treasury gains access to databases like the National Directory of New Hires and tax/Social Security data (with privacy safeguards) to identify and recover improper payments. These requirements apply to all agencies using Treasury payment systems, aiming to improve transparency and reduce wasteful spending.

In committee Dec 10, 2025 1 co-sponsor
Co-sponsor S 3358
In committee · United States Senate · Co-sponsor
Native American Seeds Act of 2025

Maddy summaryThis bill directs the Secretary of the Interior to collaborate with Indian Tribes within one year of enactment to identify culturally significant "Native American seeds" and support tribal seed banks, traditional agriculture systems, and seed protection efforts. It requires the Secretary to safeguard any culturally sensitive or confidential information shared by Tribes under this Act, prohibiting its disclosure. The bill does not authorize new funding, relying instead on existing appropriations for implementation. It directly affects Indian Tribes by empowering them to manage and protect their traditional seed resources under federal guidance.

In committee Dec 4, 2025 1 co-sponsor
Co-sponsor S 3366
In committee · United States Senate · Co-sponsor
Back the Blue Act of 2025

Maddy summaryThe Back the Blue Act of 2025 creates new federal criminal offenses for killing or assaulting law enforcement officers, judges, and certain public safety personnel (including firefighters and first responders) while they are on duty or because of their official status. It increases penalties for these crimes, including minimum 10-year prison terms for killing officers and longer sentences for assaults causing serious injury, with the death penalty possible for killings. The bill also adds a "flight to avoid prosecution" provision for those fleeing to evade charges for killing officers, expands law enforcement officers' rights to carry firearms in certain circumstances, and limits federal habeas corpus relief for individuals convicted of killing law enforcement officers. This legislation directly affects law enforcement officers, judges, and public safety personnel, as well as individuals who commit violence against them.

In committee Dec 4, 2025 1 co-sponsor
Primary S 3302
In committee · United States Senate · Lead sponsor
Mikaela Naylon Give Kids a Chance Act of 2025

Maddy summaryS 3302, the Mikaela Naylon Give Kids a Chance Act of 2025, requires drug manufacturers developing cancer treatments to conduct pediatric-focused research for certain drugs targeting pediatric cancer mechanisms. It amends FDA drug approval processes to mandate molecularly targeted pediatric cancer investigations for drugs with new active ingredients or specific approved combinations, ensuring studies address dosing, safety, and efficacy for children. The bill also extends priority review vouchers (which expedite FDA reviews) for rare pediatric disease treatments until 2030 and mandates GAO studies to evaluate how effectively these incentives spur new pediatric cancer drug development. These changes apply to new drug applications submitted three years after the law's enactment, with reports due to Congress at 6, 8, and 10 years.

In committee Dec 2, 2025 0 co-sponsors
Co-sponsor SRES 507
Passed · United States Senate · Co-sponsor
A resolution designating November 20, 2025, as "National Rural Health Day".

Maddy summarySRES 507 designates November 20, 2025, as "National Rural Health Day," continuing an annual observance established in 2011. The resolution recognizes rural health care providers and the communities they serve, acknowledging challenges like hospital closures and access barriers in rural areas. It does not create new policies or funding but formally designates a date for public recognition. This procedural resolution was introduced by multiple senators and passed unanimously.

Passed Nov 19, 2025 1 co-sponsor
Co-sponsor S 3223
In committee · United States Senate · Co-sponsor
Hospital Adoption Education Act of 2025

Maddy summaryThe Hospital Adoption Education Act of 2025 requires the U.S. Department of Health and Human Services to develop and distribute accessible resources - such as digital tools and print materials - to help hospital staff understand adoption sensitivities and interact appropriately with prospective birth mothers and adoptive families. It mandates that the Secretary create an online resource hub for healthcare workers and establish a committee of adoption experts, including maternal health and child welfare professionals, to guide this effort. The bill also funds grants to nonprofit organizations providing non-directive adoption education to hospital staff, prohibiting entities tied to child-placing agencies or abortion services from receiving these funds. Finally, it requires a congressional report within three years assessing how many hospitals adopt the training and how many staff complete it.

In committee Nov 19, 2025 1 co-sponsor
Co-sponsor SRES 501
Passed · United States Senate · Co-sponsor
A resolution recognizing National Native American Heritage Month and celebrating the heritages and cultures of Native Americans and the contributions of Native Americans to the United States.

Maddy summarySRES 501 is a ceremonial Senate resolution recognizing November 2025 as National Native American Heritage Month. It encourages the American public to observe the month through programs and activities that celebrate Native American cultural contributions, heritage, and history. The resolution does not create new legal obligations or funding, serving solely as a symbolic acknowledgment of Native American communities' enduring impact on U.S. society.

Passed Nov 18, 2025 1 co-sponsor
Co-sponsor S 3176
In committee · United States Senate · Co-sponsor
A bill to direct the United States Postal Service to designate single, unique ZIP Codes for certain Oklahoma communities, and for other purposes.

Maddy summaryThis bill requires the U.S. Postal Service to assign a single, unique ZIP Code to Hochatown and North Enid, Oklahoma, within 270 days of the bill becoming law. It directly affects residents and businesses in those two Oklahoma communities by creating distinct postal codes for mail delivery. The key provision is a mandatory deadline for the USPS to implement this change, ensuring each community has its own dedicated ZIP Code. This is a procedural adjustment to postal service administration, not a policy change affecting broader postal rates or services.

In committee Nov 18, 2025 1 co-sponsor
Showing 31 to 40 of 807 bills
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