
U.S. Senator for Maryland
Democrat
Senate term end not loaded yet
Missed 1.5% of roll calls. Chamber median 2.1%.
The full voting recordCounts roll calls where most Democrats and most Republicans voted differently, leaving out procedural votes.
How we countFrom FEC filings, Voteview roll calls and Congress.gov.
Democrat. In Congress since 2003, 9 terms in total.
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Bills and resolutions Van Hollen signed on to as a cosponsor. An original cosponsor signed on the day the bill was introduced. Source: govinfo bill status files, last updated Nov 6, 2026.
Van Hollen also withdrew as a cosponsor from 2 bills, not listed here.
Protecting America’s Workers Act
Sponsor Bernie Sanders (I). Original cosponsor. 17 cosponsors. S. 4413 on Congress.gov
Introduced
A resolution expressing support for the staff of public, school, academic, and special libraries in the United States and the essential services those libraries provide to communities, recognizing the need for funding commensurate with the broad scope of social service and community supports provided by libraries, preserving the right of all citizens of the United States to freely access information and resources in their communities, supporting a strong union voice for library workers, and defending the civil rights of library staff.
Sponsor Mazie Hirono (D). Original cosponsor. 8 cosponsors. S.Res. 688 on Congress.gov(opens in a new tab)
Introduced
A joint resolution proposing an amendment to the Constitution of the United States relative to the fundamental right to vote.
Sponsor Richard Durbin (D). Original cosponsor. 9 cosponsors. S.J.Res. 186 on Congress.gov(opens in a new tab)
Introduced
This joint resolution proposes a constitutional amendment related to the fundamental right to vote.
Specifically, it grants every U.S. citizen of legal voting age the fundamental right to vote in any public election held in the jurisdiction in which the citizen resides.
Next, it specifies that the fundamental right to vote shall not be denied or abridged by the United States, a state, or a political subdivision of a state, unless the denial or abridgment is in furtherance of a compelling governmental interest by the least restrictive means.
Finally, it repeals a specific portion of the Fourteenth Amendment to the Constitution, which allows for the denial of the right to vote based on crime. (Currently, some states disallow individuals from voting, either temporarily or indefinitely, after incarceration for a felony.)
A joint resolution to direct the removal of United States Armed Forces from hostilities within or against the Republic of Cuba that have not been authorized by Congress.
Sponsor Timothy Kaine (D). Joined Apr 27, 2026. 13 cosponsors. S.J.Res. 124 on Congress.gov(opens in a new tab)
Introduced
This joint resolution directs the President to remove U.S. Armed Forces from hostilities within or against Cuba unless a declaration of war or authorization to use military force for such purpose has been enacted.
The resolution specifies that it shall not be construed to prevent the United States from defending itself from an armed attack, the threat of an imminent armed attack, or the lawful execution of counternarcotics operations.
Terrorism Risk Insurance Program Reauthorization Act of 2026
Sponsor David McCormick (R). Original cosponsor. 42 cosponsors. S. 4395 on Congress.gov(opens in a new tab)
Passed the Senate
Terrorism Risk Insurance Program Reauthorization Act of 2026
This bill reauthorizes the Terrorism Risk Insurance Program through 2034. The program covers a portion of the losses incurred by private insurers for property and casualty insurance coverage for terrorism risk.
HELP Separated Children Act
Sponsor Tina Smith (D). Original cosponsor. 17 cosponsors. S. 4389 on Congress.gov(opens in a new tab)
Introduced
Housing Survivors of Major Disasters Act of 2026
Sponsor Elizabeth Warren (D). Original cosponsor. 12 cosponsors. S. 4388 on Congress.gov(opens in a new tab)
Introduced
Drug Deal Disclosure Act
Sponsor Ron Wyden (D). Joined Apr 27, 2026. 18 cosponsors. S. 4355 on Congress.gov(opens in a new tab)
Introduced
A resolution recognizing the significance of Community College Month in April as a celebration of more than 1,000 institutions throughout the United States supporting access to higher education, workforce training, and more broadly sustaining and advancing the economic prosperity of the United States.
Sponsor Edward Markey (D). Original cosponsor. 16 cosponsors. S.Res. 686 on Congress.gov(opens in a new tab)
Passed the Senate
This resolution recognizes the significance of Community College Month in April as a celebration of over 1,000 community colleges throughout the United States that serve local and regional needs and strengthen the U.S. economy.
Climate Change Education Act
Sponsor Edward Markey (D). Original cosponsor. 8 cosponsors. S. 4377 on Congress.gov(opens in a new tab)
Introduced
Absentee and Mail Voter Protection Act
Sponsor Alex Padilla (D). Original cosponsor. 40 cosponsors. S. 4369 on Congress.gov(opens in a new tab)
Introduced
America's Olympic and Paralympic Games Commemorative Coins Act
Sponsor Alex Padilla (D). Joined Apr 22, 2026. 72 cosponsors. S. 2265 on Congress.gov(opens in a new tab)
Introduced
A joint resolution to direct the removal of United States Armed Forces from hostilities within or against the Islamic Republic of Iran that have not been authorized by Congress.
Sponsor Mark Kelly (D). Joined Apr 21, 2026. 6 cosponsors. S.J.Res. 161 on Congress.gov(opens in a new tab)
Introduced
This joint resolution directs the President to remove U.S. Armed Forces from hostilities within or against Iran unless a declaration of war or authorization to use military force for such purpose has been enacted.
The resolution specifies that it shall not be construed to prevent the United States from defending against an attack on the United States or its personnel or facilities in other nations.
A joint resolution to direct the removal of United States Armed Forces from hostilities within or against the Islamic Republic of Iran that have not been authorized by Congress.
Sponsor Adam Schiff (D). Joined Apr 20, 2026. 10 cosponsors. S.J.Res. 184 on Congress.gov(opens in a new tab)
Introduced
This joint resolution directs the President to remove U.S. Armed Forces from hostilities within or against Iran unless a declaration of war or authorization to use military force for such purpose has been enacted.
The resolution specifies that it shall not be construed to prevent the United States from defending against an attack on the United States or its personnel or facilities in other nations.
A joint resolution to direct the removal of United States Armed Forces from hostilities within or against the Islamic Republic of Iran that have not been authorized by Congress.
Sponsor Kirsten Gillibrand (D). Joined Apr 20, 2026. 8 cosponsors. S.J.Res. 181 on Congress.gov(opens in a new tab)
Introduced
This joint resolution directs the President to remove U.S. Armed Forces from hostilities within or against Iran unless a declaration of war or authorization to use military force for such purpose has been enacted.
The resolution specifies that it shall not be construed to prevent the United States from defending against an attack on the United States or its personnel or facilities in other nations.
A joint resolution to direct the removal of United States Armed Forces from hostilities within or against the Islamic Republic of Iran that have not been authorized by Congress.
Sponsor Andy Kim (D). Joined Apr 20, 2026. 10 cosponsors. S.J.Res. 171 on Congress.gov(opens in a new tab)
Introduced
This joint resolution directs the President to remove U.S. Armed Forces from hostilities within or against Iran unless a declaration of war or authorization to use military force for such purpose has been enacted.
The resolution specifies that it shall not be construed to prevent the United States from defending against an attack on the United States or its personnel or facilities in other nations.
A joint resolution to direct the removal of United States Armed Forces from hostilities within or against the Islamic Republic of Iran that have not been authorized by Congress.
Sponsor Jeff Merkley (D). Joined Apr 20, 2026. 11 cosponsors. S.J.Res. 163 on Congress.gov(opens in a new tab)
Introduced
This joint resolution directs the President to remove U.S. Armed Forces from hostilities within or against Iran unless a declaration of war or authorization to use military force for such purpose has been enacted.
The resolution specifies that it shall not be construed to prevent the United States from defending against an attack on the United States or its personnel or facilities in other nations.
A resolution expressing the sense of the Senate that the President should prioritize securing the release of Pastor Jin Mingri, Pastor Gao Quanfu and his wife Pang Yu, Dr. Gulshan Abbas, and Jimmy Lai detained by the People's Republic of China during future engagements with Chinese President Xi Jinping.
Sponsor Richard Durbin (D). Original cosponsor. 13 cosponsors. S.Res. 677 on Congress.gov(opens in a new tab)
Introduced
A resolution supporting the designation of the week of April 11 through April 17, 2026, as "Black Maternal Health Week", founded by Black Mamas Matter Alliance, Inc., to bring national attention to the maternal and reproductive health crisis in the United States and the importance of reducing maternal mortality and morbidity among Black women and birthing people.
Sponsor Cory Booker (D). Original cosponsor. 15 cosponsors. S.Res. 675 on Congress.gov(opens in a new tab)
Introduced
A joint resolution to direct the removal of United States Armed Forces from hostilities within or against the Islamic Republic of Iran that have not been authorized by Congress.
Sponsor Tammy Baldwin (D). Joined Apr 16, 2026. 11 cosponsors. S.J.Res. 114 on Congress.gov(opens in a new tab)
Introduced
This joint resolution directs the President to remove U.S. Armed Forces from hostilities within or against Iran unless a declaration of war or authorization to use military force for such purpose has been enacted.
The resolution specifies that it shall not be construed to prevent the United States from defending against an attack on the United States or its personnel or facilities in other nations.
No Big Fossil Bailouts on Your Power Bill Act
Sponsor Edward Markey (D). Original cosponsor. 4 cosponsors. S. 4337 on Congress.gov(opens in a new tab)
Introduced
Ending the Carried Interest Loophole Act
Sponsor Ron Wyden (D). Original cosponsor. 14 cosponsors. S. 4330 on Congress.gov(opens in a new tab)
Introduced
A resolution calling for the return of abducted Ukrainian children before finalizing any peace agreement to end the war against Ukraine.
Sponsor Chuck Grassley (R). Joined Apr 15, 2026. 36 cosponsors. S.Res. 236 on Congress.gov(opens in a new tab)
Introduced
Stop CHEATERS Act
Sponsor Angus King (I). Original cosponsor. 28 cosponsors. S. 4298 on Congress.gov(opens in a new tab)
Introduced
Stop Corporations and High Earners from Avoiding Taxes and Enforce the Rules Strictly Act or the Stop CHEATERS Act
This bill provides additional appropriations to the Internal Revenue Service (IRS) for FY2026-FY2031 and establishes reporting requirements related to tax enforcement for high-income individuals and corporations.
The bill provides specified appropriations to the IRS for FY2026-FY2031 for purposes such as tax enforcement, taxpayer services, technology and operations support, and business systems modernization. The funds provided by the bill remain available until expended.
The bill also requires the IRS to submit a report to Congress every two years that includes a comprehensive description of a plan to
• shift more IRS auditing and enforcement assets toward high-income individuals and large corporations,
• recruit and retain auditors with the skills essential to audit high-income individuals and large corporations, and
• increase voluntary compliance among high-income individuals and large corporations.
The report must also include (1) a description of the progress that has been made in implementing the plan; and (2) an analysis of how much of the difference between the taxes owed and the taxes collected by the IRS is attributable to taxpayers at different income levels, including high-income individuals and large corporations.
The bill also requires the Treasury Inspector General for Tax Administration to submit a report to Congress evaluating the IRS's plan and its progress in implementing the plan.
Keep Public Funds in Public Schools Act
Sponsor Mark Kelly (D). Original cosponsor. 35 cosponsors. S. 4297 on Congress.gov(opens in a new tab)
Introduced