​Attorney General of Maryland ​Anthony G. Brown

Maryland Actions

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The Maryland Attorney General's Office is working hard to protect Maryland residents from the harmful actions of the Trump administration. Among other actions, Maryland – as lead plaintiff – is spearheading a coalition of 20 attorneys general in challenging unlawful mass layoffs of thousands of federal probationary employees, terminations that are draining state resources and threatening our economy. Maryland has also joined other multistate lawsuits to challenge the administration's harmful policies, including the dismantling of the Department of Education, freezes on essential federal funds and cuts to medical research, the unlawful acts of Elon Musk's so-called Department of Government Efficiency (DOGE), and President Trump's attempt to overturn the Fourteenth Amendment and end birthright citizenship. 

The Maryland Attorney General's Office is working hard to protect Maryland residents from the harmful actions of the Trump administration. Maryland has joined multistate lawsuits, friend of the court (“amicus”) briefs, comment letters, and taken other actions to challenge the administration's harmful policies. Below is a list of lawsuits our office led, co-led, or joined and a list of amicus briefs we led or co-led.

In addition to the list below, which is maintained by our office, the Progressive State Leaders Committee (PSLC), an organization that advocates for progressive policies that promote justice, fairness, and equity, has launched a public website tracking actions taken by state leaders, including our office, to protect Marylanders and the State’s interests from harmful federal policies. Users can filter actions by state, category, and what position our office took in each action (for example, plaintiff or amici state). Please see link to the tracker below. The Maryland Office of the Attorney General does not own, maintain, or is responsible for its content.  ​

Click here to access the ​PSLC tracker.​

If the Trump administration continues to take actions that hurt our State and its residents, our Office will stand up for Marylanders and challenge those actions in court. 

Action Totals
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 Cases
Case Category Filed Date Court Description
string;#State of New Jersey, et al. v. Donald Trump, et al. Birthright Citizenship January 21, 2025 U.S. District Court – District of Massachusetts Challenges executive order effectively ending birthright citizenship, violating fundamental and longstanding constitutional rights.
string;#State of New York, et al. v. Donald Trump, et al. Federal Funding Freezes January 28, 2025 U.S. District Court – District of Rhode Island Challenges policy freezing trillions in federal payments and grants on which every state relies to provide essential services.
string;#State of New York, et al. v. Donald Trump, et al. Federal Workers & Agencies February 7, 2025 U.S. District Court – District of New York Challenges unauthorized DOGE/Elon Musk access to Treasury payment system and Americans' sensitive personal data including bank accounts and SSNs.
string;#Commonwealth of Massachusetts, et al. v. NIH Federal Funding Freezes February 10, 2025 U.S. District Court – District of Massachusetts Challenges unlawful cuts to funds supporting cutting-edge medical and public health research at universities and research institutions.
string;#State of New Mexico, et al., v. Elon Musk, et al. Federal Workers & Agencies February 13, 2025 U.S. District Court – District of Columbia Argues Trump violated Appointments Clause by creating DOGE without Congressional approval and granting Musk sweeping powers without Senate consent.
string;#State of Maryland, et al. v. USDA, et al. Federal Workers & Agencies March 6, 2025 U.S. District Court – District of Maryland OAG-led coalition of 20 AGs challenging mass layoffs of federal probationary employees by numerous federal agencies.
string;#State of California, et al. v. U.S. Dept. of Education, et al. Education March 6, 2025 U.S. District Court – District of Massachusetts Challenges unlawful halting of K-12 teacher preparation grant funding for rural/urban communities and hard-to-fill positions.
string;#State of New York, et al. v. Linda McMahon, et al. Education March 13, 2025 U.S. District Court – District of Massachusetts Challenges dismantling of the Department of Education, including planned 50% workforce reduction targeting a 'total shutdown.'
string;#Colorado v. U.S. Dept. of Health and Human Services Federal Funding Freezes April 1, 2025 U.S. District Court – District of Rhode Island Challenges abrupt termination of $11B in federal public health funding by HHS to plaintiff states.
string;#State of California, et al. v. Donald Trump, et al. Voting April 3, 2025 U.S. District Court – District of Massachusetts Challenges Executive Order No. 14248 as an unconstitutional attempt to impose sweeping voting restrictions across the country.
string;#State of Rhode Island, et al. v. Donald Trump, et al. Federal Workers & Agencies April 4, 2025 U.S. District Court – District of Rhode Island Challenges unauthorized dismantling of IMLS, Minority Business Development Agency, and Federal Mediation and Conciliation Service.
string;#Commonwealth of Massachusetts, et al. v. Robert Kennedy, Jr., et. al. Federal Funding Freezes April 4, 2025 U.S. District Court – District of Massachusetts Challenges unreasonable delays in reviewing NIH grant applications and termination of hundreds of already-issued grants.
string;#State of New York, et al. v. Department of Education, et al. Education April 10, 2025 U.S. District Court – Southern District of New York Seeks to restore Maryland's access to ~$250M from the Education Stabilization Fund for COVID-19 pandemic K-12 recovery.
string;#State of New York, et al. v. Department of Education, et al. Education April 25, 2025 U.S. District Court – District of Massachusetts Challenges DOE threats to withhold federal funding from agencies that refuse to abandon programs promoting equal access to education.
string;#State of Maryland, et al., v. AmeriCorps, et al. Federal Workers & Agencies April 29, 2025 U.S. District Court – District of Maryland Challenges dismantling of AmeriCorps: ~90% workforce reduction, cancelled contracts, $400M in programs closed, affecting 200,000+ Americans.
string;#State of New York et al. v. Robert Kennedy, Jr., et. al. Federal Funding Freezes May 5, 2025 U.S. District Court – District of Rhode Island Challenges dismantling of HHS and resulting harm across the entire healthcare system.
string;#State of New York, et al. v. Donald Trump, et al. Environment May 5, 2025 U.S. District Court – District of Massachusetts Challenges unlawful freeze on wind energy development, harming Maryland's clean energy goals and electricity demand planning.
string;#State of Washington, et al. v. U.S. Dept. of Transportation, et al. Environment May 7, 2025 U.S. District Court – Western District of Washington Challenges illegal termination of billions in congressionally approved EV infrastructure funding.
string;#State of Washington, et al. v. Donald Trump, et al. Environment May 9, 2025 U.S. District Court – Western District of Washington Challenges use of emergency authorities to override environmental protections for energy projects.
string;#State of Illinois, et al., v. FEMA, et al. Immigration May 13, 2025 U.S. District Court – District of Rhode Island Challenges illegal coercion of states into immigration enforcement by threatening emergency services funding.
string;#State of California, et al., v. U.S. Dept. of Transportation, et al. Immigration May 13, 2025 U.S. District Court – District of Rhode Island Challenges illegal coercion of states into immigration enforcement by threatening transportation infrastructure funding.
string;#State of New York et al. v. National Science Foundation et. al. Federal Funding Freezes May 28, 2025 U.S. District Court – Southern District of New York Challenges illegal cuts to NSF programs and funding that support U.S. leadership in STEM.
string;#State of New Jersey, et al., v. Bondi, et al. Public Safety June 9, 2025 U.S. District Court – District of Maryland Challenges ATF's official plans to distribute thousands of machinegun conversion devices (MCDs) to communities across the U.S.
string;#Association of American Universities, et al. v. Dept. of Defense Education June 16, 2025 U.S. District Court – District of Massachusetts Challenged DOD's arbitrary cap on indirect costs for research grants. Won preliminary relief and final judgment, saving UMD College Park ~$7M.
string;#State of New Jersey et al. v. U.S. Office of Management and Budget Federal Funding Freezes June 24, 2025 U.S. District Court – District of Massachusetts Challenges unlawful use of a single regulatory provision to strip billions in federal funding for crime, education, clean water, medical research, and more.
string;#State of Washington et al. v. U.S. Dept. of Education, et. al. Education June 30, 2025 U.S. District Court – Western District of Washington Challenges unlawful cutting of congressionally approved funding for mental health programs in K-12 schools.
string;#State of California, et al., v. U.S. Dept. of HHS et al. Immigration July 1, 2025 U.S. District Court – Northern District of California Challenges HHS providing DHS/ICE unfettered access to individual personal health data.
string;#State of California et al. v. Linda McMahon, et. al. Education July 14, 2025 U.S. District Court – District of Rhode Island Challenges freeze of $6.8B in funding for six longstanding education programs just weeks before school year, violating federal statutes and separation of powers.
string;#State of Washington, et al. v. FEMA, et al. Environment July 16, 2025 U.S. District Court – Western District of Washington Challenges illegal shutdown of FEMA's BRIC pre-disaster mitigation program, executed by unconfirmed FEMA Administrator.
string;#State of California, et al., v. Robert Kennedy Jr., et al. Healthcare July 17, 2025 U.S. District Court – District of Massachusetts Challenges HHS/CMS rule creating ACA enrollment barriers; up to 1.8M people projected to lose coverage. Also excludes gender-affirming care as essential benefit.
string;#State of New York, et al., v. U.S. Dept. of Justice, et al. Healthcare July 21, 2025 U.S. District Court – District of Rhode Island Challenges federal restrictions prohibiting state safety net programs from serving residents regardless of immigration status, threatening Head Start, Title X, and more.
string;#State of California, et al., v. U.S. Dept. of Agriculture et al. Immigration July 28, 2025 U.S. District Court – Northern District of California Challenges USDA demand that states turn over sensitive personal data on millions of SNAP recipients for use in mass deportation efforts.
string;#State of California, et al., v. U.S. Dept. of HHS, et al. Healthcare July 29, 2025 U.S. District Court – District of Massachusetts Challenges 'Big Beautiful Bill' provisions blocking federal Medicaid funding for Planned Parenthood, arguing Spending Clause violations.
string;#Commonwealth of Massachusetts, et al. v. Donald Trump, et al. LGBTQIA+ Issues August 1, 2025 U.S. District Court – District of Massachusetts Challenges federal efforts to restrict healthcare access for transgender, intersex, and nonbinary youth under age 19, even in states where such care is legal.
string;#State of New York, et al. v. U.S. Dept. of Energy, et al. Environment August 15, 2025 U.S. District Court – District of Oregon Challenges new DOE funding cap cutting support for vital state-run clean energy and energy efficiency programs.
string;#State of New Jersey, et al. v. U.S. Dept. of Justice, et al. Public Safety August 18, 2025 U.S. District Court – District of Rhode Island Challenges illegal immigration enforcement conditions placed on Victims of Crime Act grants used to support crime survivors.
string;#State of Washington, et al., v. U.S. Dept. of HHS, et al. Healthcare September 26, 2025 U.S. District Court – District of Oregon 17 AGs challenge HHS threats to pull funding for teen sexual health education programs unless states remove language affirming gender identity.
string;#State of New York, et al., v. U.S. Dept. of Justice, et al. Public Safety October 1, 2025 U.S. District Court – District of Rhode Island Challenges rule barring states from using VOCA, Byrne JAG, and VAWA grant funds to provide legal services to undocumented immigrants.
string;#Maryland Clean Energy Center, et al. v. United States of America Environment October 15, 2025 U.S. Court of Federal Claims Challenges EPA's breach of Solar for All grant agreements totaling $2.9B; seeks monetary damages for solar program termination in low-income communities.
string;#State of Arizona, et al. v. U.S. EPA, et al. Environment October 16, 2025 U.S. District Court – Western District of Washington 24 states challenge EPA's termination of Solar for All program as unlawful interpretation of H.R. 1 and violation of separation of powers.
string;#Commonwealth of Massachusetts, et al. v. USDA, et al. Human Services October 28, 2025 U.S. District Court – District of Massachusetts Challenges USDA's suspension of November 2025 SNAP benefits despite available contingency funds, affecting 42M+ Americans.
string;#Commonwealth of Massachusetts, et al. v. U.S. Dept. of Education, et al. Education November 3, 2025 U.S. District Court – District of Massachusetts Challenges new federal rule restricting PSLF eligibility via vague 'substantial illegal purpose' standard targeting legal activities like DEI and gender-affirming care.
string;#State of Michigan, et al. v. Kristi Noem, et al. Environment November 4, 2025 U.S. District Court – District of Oregon, Eugene Division Challenges FEMA's demands for state population data and reduction of EMPG/HSGP grant performance periods from 3 years to 1 year.
string;#State of Maryland and Prince George's County v. Kash Patel, et al. Federal Workers & Agencies November 6, 2025 U.S. District Court – District of Maryland Challenges FBI/GSA selection of Ronald Reagan Building as FBI HQ, diverting $1B+ from congressionally directed Greenbelt, MD location.
string;#State of Washington al. v. U.S. Dept. of HUD, et al. Human Services November 25, 2025 U.S. District Court – District of Rhode Island 20 states challenge HUD changes limiting access to long-term housing and services for tens of thousands experiencing homelessness.
string;#State of New York al. v. Brooke Rollins, et al. Human Services November 26, 2025 U.S. District Court – District of Oregon, Eugene Division 21 states challenge USDA guidance wrongly treating lawful permanent residents—including asylees and refugees—as ineligible for SNAP.
string;#State of California et al. v. Kristi Noem, et al. Immigration December 12, 2025 U.S. District Court – District of Massachusetts Challenges unlawful $100K fee on new H-1B visa petitions, threatening Maryland's ability to fill 1,600+ teacher vacancies and staff universities.
string;#State of California et al. v. U.S. Dept. of Transportation, et al. Environment December 16, 2025 U.S. District Court – Western District of Washington Challenges suspension of two EV charging infrastructure grant programs under the IIJA, threatening $56M+ and 91 new charging stations for Maryland.
string;#State of New York et al. v. Russel T. Vought et al. Federal Workers & Agencies December 22, 2025 U.S. District Court – District of Oregon, Eugene Division Challenges complete defunding of the CFPB, which Maryland OAG relies on to investigate fraud, discrimination, and predatory lending.
string;#State of Oregon, et al. v. Robert F. Kennedy, Jr., et al. LGBTQIA+ Issues December 23, 2025 U.S. District Court – Oregon, Eugene Division Challenges HHS 'declaration' threatening to exclude providers of gender-affirming care for youth from Medicare and Medicaid.
string;#State of Maryland, et al. v. U.S. Dept. of Education, et al. Education December 30, 2025 U.S. District Court – District of Maryland Challenges unlawful cuts to congressionally approved funding for Full Service Community School programs serving high-need elementary and secondary schools.
string;#State of California, et al. v. Christopher Wright, et al. Environment February 18, 2026 U.S. District Court – Northern District of California, San Francisco Division 13-state coalition challenges unlawful termination of IRA and Bipartisan Infrastructure Law energy funding, including $5.8M terminated for UMD.
string;#State of Maryland v. Kristi Noem, et al. Immigration February 23, 2026 U.S. District Court – District of Maryland Challenges conversion of 54-acre Williamsport warehouse into 1,500-person ICE detention center without required environmental review or public input.
string;#State of Arizona, et al. v. Robert Kennedy Jr., et al. Healthcare February 25, 2026 U.S. Court – Northern District of California 15-state lawsuit challenges Trump overhaul of childhood immunization schedule, stripping 7 vaccines of recommended status without scientific basis.
string;#State of Colorado, et al. v. U.S. Dept. of Homeland Security, et al. Public Safety February 25, 2026 U.S. Court of Federal Claims OAG co-led 6-state lawsuit against DHS/FEMA for unlawfully terminating the Targeted Violence and Terrorism Prevention grant program.
string;#State of Oregon, et al. v. Donald Trump, et al. Federal Funding Freezes March 5, 2026 U.S. Court of International Trade 24-state coalition challenges Trump tariffs imposed under inapplicable Section 122 authority, violating law, separation of powers, and APA.
string;#State of Maryland, et al., v. Todd M. Lyons, et al. Immigration March 10, 2026 U.S. District Court – District of Maryland Compels ICE to comply with OAG administrative subpoena re: civil rights investigation into dangerous/inhumane conditions at Baltimore ICE detention facility.
string;#Commonwealth of Massachusetts, et al. v. U.S. Dept. of Education, et al. Education March 11, 2026 U.S. District Court – District of Massachusetts 17-state lawsuit challenges DOE IPEDS student data reporting mandate as rushed, vaguely defined, a threat to student privacy, and violating the APA.
string;#State of Illinois, et al. v. U.S. Dept. of HUD, et al. Human Services March 16, 2026 U.S. District Court – Northern District of California, San Francisco Division 16-state lawsuit challenges HUD threats to cut funding to state civil rights agencies unless they stop enforcing fair housing protections beyond federal requirements.
string;#Commonwealth of Massachusetts, et al. v. U.S. EPA, et al. Environment March 19, 2026 U.S. Court of Appeals – D.C. Circuit Broad coalition challenges EPA's rescission of its 2009 Endangerment Finding on greenhouse gas emissions, which would eliminate all federal vehicle emission standards.
string;#Commonwealth of Massachusetts, et al. v. U.S. Dept. of Agriculture, et al. Human Services March 23, 2026 U.S. District Court – District of Massachusetts 21-state lawsuit challenges USDA conditions on school lunches, WIC, and SNAP tied to vague immigration/DEI demands. MD receives $2B+ annually.
string;#State of California, et al. v. Donald Trump, et al. Voting April 3, 2026 U.S. District Court – District of Massachusetts 23-state coalition challenges executive order establishing national voter eligibility list, restricting mail ballots, and threatening state election officials.

 Amicus Briefs
Case Name Date
string;#PFLAG, Inc., et al. v. Donald Trump, et al. February 21, 2025
string;#Mid-America Milling Co., et al. v. U.S. Department of Transportation, et al. June 24, 2025
string;#Oregon Council for the Humanities, et al. v. U.S. DOGE Service, et al. July 3, 2025
string;#Citizens for Responsibility and Ethics in Washington v. Office of Management and Budget, et al. July 25, 2025
string;#District of Columbia v. Donald J. Trump, et al. September 15, 2025
string;#State of Oregon, et al. v. Donald J. Trump, et al. October 8, 2025
string;#State of Illinois, et al. v. Donald J. Trump, et al. October 11, 2025
string;#Donald Trump, et al. v. State of Illinois, et al. October 20, 2025
string;#Mayor and City Council of Ocean City Maryland, et al. v. US Department of the Interior, et al. October 29, 2025