
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.
A resolution recognizing that climate change portends a cascade of financial market collapses that would destabilize the national and global economies.
Sponsor Sheldon Whitehouse (D). Original cosponsor. 8 cosponsors. S.Res. 557 on Congress.gov(opens in a new tab)
Introduced
A resolution recognizing that Florida's insurance market is gravely stressed by climate risks.
Sponsor Sheldon Whitehouse (D). Original cosponsor. 7 cosponsors. S.Res. 556 on Congress.gov(opens in a new tab)
Introduced
A resolution recognizing that climate change poses a threat to the mortgage market and to home values.
Sponsor Sheldon Whitehouse (D). Original cosponsor. 10 cosponsors. S.Res. 555 on Congress.gov(opens in a new tab)
Introduced
A resolution recognizing the strong link between climate change and skyrocketing insurance premiums.
Sponsor Sheldon Whitehouse (D). Original cosponsor. 10 cosponsors. S.Res. 554 on Congress.gov(opens in a new tab)
Introduced
A resolution recognizing that climate change is real.
Sponsor Sheldon Whitehouse (D). Original cosponsor. 8 cosponsors. S.Res. 553 on Congress.gov(opens in a new tab)
Introduced
A resolution recognizing that oceans are warming due to human-caused climate change.
Sponsor Sheldon Whitehouse (D). Original cosponsor. 8 cosponsors. S.Res. 552 on Congress.gov(opens in a new tab)
Introduced
A resolution recognizing that sea levels are rising at accelerated rates due to human-caused climate change.
Sponsor Sheldon Whitehouse (D). Original cosponsor. 8 cosponsors. S.Res. 551 on Congress.gov(opens in a new tab)
Introduced
A resolution recognizing that climate change is not a hoax, but sound science.
Sponsor Sheldon Whitehouse (D). Original cosponsor. 10 cosponsors. S.Res. 550 on Congress.gov(opens in a new tab)
Introduced
States' Right to Regulate AI Act
Sponsor Edward Markey (D). Original cosponsor. 10 cosponsors. S. 3557 on Congress.gov(opens in a new tab)
Introduced
Schedules That Work Act
Sponsor Elizabeth Warren (D). Original cosponsor. 20 cosponsors. S. 3550 on Congress.gov(opens in a new tab)
Introduced
Student Loan Tax Elimination Act
Sponsor Jim Banks (R). Original cosponsor. 4 cosponsors. S. 3538 on Congress.gov(opens in a new tab)
Introduced
Public Health Air Quality Act of 2025
Sponsor Lisa Blunt Rochester (D). Original cosponsor. 6 cosponsors. S. 3529 on Congress.gov(opens in a new tab)
Introduced
Clean Competition Act
Sponsor Sheldon Whitehouse (D). Original cosponsor. 5 cosponsors. S. 3523 on Congress.gov(opens in a new tab)
Introduced
Medicare Investment and Gun Violence Prevention Act
Sponsor Angela Alsobrooks (D). Original cosponsor. 4 cosponsors. S. 3512 on Congress.gov(opens in a new tab)
Introduced
A resolution commemorating the 50th anniversary of Southeast Asian refugee resettlement and the many contributions and sacrifices of Southeast Asian Americans to the United States.
Sponsor Mazie Hirono (D). Original cosponsor. 11 cosponsors. S.Res. 542 on Congress.gov(opens in a new tab)
Introduced
Background Check Completion Act of 2025
Sponsor Richard Blumenthal (D). Original cosponsor. 25 cosponsors. S. 3458 on Congress.gov(opens in a new tab)
Introduced
Background Check Completion Act of 2025
This bill prohibits a licensed gun dealer from transferring a firearm to an unlicensed person prior to the completion of a background check. Current law permits a licensed gun dealer to transfer a firearm to an unlicensed person if a submitted background check remains incomplete after three business days.
NOTICE Act
Sponsor Cory Booker (D). Original cosponsor. 6 cosponsors. S. 3449 on Congress.gov(opens in a new tab)
Introduced
Keeping All Students Safe Act
Sponsor Christopher Murphy (D). Original cosponsor. 17 cosponsors. S. 3448 on Congress.gov(opens in a new tab)
Introduced
Keeping All Students Safe Act
This bill prohibits the use of seclusion and limits the use of physical restraint in schools and Head Start programs that receive federal funding.
Specifically, the bill prohibits the use of seclusion, which is the involuntary confinement of a student alone in a room or area from which the student is physically prevented from leaving. The term does not include a time out, which may involve separating the student from others in a non-locked setting.
The bill prohibits the use of mechanical or chemical restraints or physical restraints that restrict breathing or are life threatening.
The bill outlines the requirements for the use of physical restraint, including that the student's behavior must pose an imminent danger of serious physical injury to the student or other individual. Each state must ensure that a sufficient number of program personnel are trained and certified by a state-approved crisis intervention training program. Additionally, each program must establish procedures to follow after an incident involving physical restraint.
Further, the bill establishes enforcement provisions, including a private right of action for a student who has been subjected to unlawful seclusion or restraint. The Department of Education and the Department of Health and Human Services must withhold payments from a program for unlawful seclusion or restraint.
Finally, the bill requires each state educational agency (SEA) to establish, implement, and enforce policies and procedures required by the bill. It also creates a grant program to assist SEAs with these activities.
FAAN Act
Sponsor Jeff Merkley (D). Original cosponsor. 14 cosponsors. S. 3435 on Congress.gov(opens in a new tab)
Introduced
A joint resolution providing for congressional disapproval under chapter 8 of title 5, United States Code, of the rule submitted by U.S. Citizenship and Immigration Services relating to "Removal of the Automatic Extension of Employment Authorization Documents".
Sponsor Jacky Rosen (D). Original cosponsor. 11 cosponsors. S.J.Res. 99 on Congress.gov(opens in a new tab)
Introduced
International Human Rights Defense Act of 2025
Sponsor Edward Markey (D). Original cosponsor. 35 cosponsors. S. 3426 on Congress.gov(opens in a new tab)
Introduced
Support UNFPA Funding Act
Sponsor Jeanne Shaheen (D). Original cosponsor. 16 cosponsors. S. 3393 on Congress.gov(opens in a new tab)
Introduced
A resolution condemning white supremacy, hate, and antisemitism, and efforts to give a platform to these dangerous ideologies.
Sponsor Charles Schumer (D). Original cosponsor. 46 cosponsors. S.Res. 533 on Congress.gov(opens in a new tab)
Introduced
A resolution condemning the pardon of ex-Honduran President Juan Orlando Hernandez.
Sponsor Peter Welch (D). Original cosponsor. 11 cosponsors. S.Res. 530 on Congress.gov(opens in a new tab)
Introduced
Flight Delay and Cancellation Compensation Act
Sponsor Mark Kelly (D). Original cosponsor. 16 cosponsors. S. 3347 on Congress.gov(opens in a new tab)
Introduced