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  • The Case

    The Case

    In March 2020, 16 young people from across the state of Montana filed a constitutional climate lawsuit against their own state government. Get the details, meet the plaintiffs, etc.

    Timeline
    • Supreme Court
    Full Trial Video
    • Key Documents
    Trial Details
    • Day by Day
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  • The People

    The People

    Meet the plaintiffs, expert witnesses, their legal team and the defendants in Held v. State of Montana.

    Plaintiffs Side
    • Legal Team
    • Youth Plaintiffs
    • Experts
    • Fact Witness
    Defendants Side
  • In The News

    In The News

    Held v. State of Montana hit headlines locally, nationally, and globally. Read select coverage.

    Media Coverage
    Press Center
  • Learning Resources

    Learning Resources

    Our Children’s Trust builds its groundbreaking youth-led climate litigation on a foundation of the best available climate science. Learn about the most up-to-date, cutting-edge science and why reducing atmospheric CO2 to below 350 ppm is necessary to restore the Earth’s energy balance and stabilize our climate system.

    Learning Resources
    • Books
    • Articles
    • Congressional Resolution
    • Film & Video
    • Podcast & Radio
    • Curricula
    • OCT Impact Report
  • Legal team
  • Youth Plaintiffs
  • Experts
  • Fact Witness

Our Children’s Trust

  • Nate Bellinger
  • Susan Carey
  • Anders Carlson
  • Mat dos Santos
  • Phil Gregory
  • Ji Hyun Lee
  • Julia Olson
  • Andrea Rodgers
  • David Schwartz
  • Kelly Shedd

McGarvey Law

  • Roger Sullivan

Western Environmental Law Center

  • Barbara Chillcott
  • Melissa Hornbein
  • Rikki H.
  • Badge B.
  • Lander B.
  • Ruby & Lilian D.
  • Georgi F.
  • Grace G.
  • Taleah H.
  • Mica K.
  • Nate & Jeffrey K.
  • Eva L.
  • Sariel S.
  • Kian T.
  • Claire V.
  • Olivia V.
  • Dr. Richard Barrett
  • Dr. Lori Byron
  • Dr. Rob Byron
  • Michael Durglo Jr.
  • Peter Erickson
  • Dr. Dan Fagre
  • Mark Haggerty
  • Anne Hedges
  • Dr. Mark Jacobson
  • Dr. Steven Running
  • Dr. Jack Stanford
  • Dr. Kevin Trenberth
  • Dr. Lise Van Susteren
  • Dr. Cathy Whitlock
  • Mae Nan Ellingson

Legal team

As advocates, our job is to make sure children’s voices are heard in courts of law. Held youth plaintiffs are represented by Nate Bellinger, Mat dos Santos, Philip Gregory, Julia Olson, Andrea Rodgers with Our Children’s Trust; Melissa Hornbein and Barbara Chillcott with Western Environmental Law Center; and Roger Sullivan with McGarvey Law.

Mat leading youth plaintiffs through a crowd
OUR CHILDREN'S TRUST

Mat dos Santos

Mat leads our organizational work, including the development of a robust, high-functioning administrative support team and strategic, brand-driven engagement campaigns to secure a stable financial future. Mat will lead legal compliance and risk management, and oversee finance, operations, and development. They will continue to bring their excellent impact litigation strategic thinking gained over the nearly 20 years of experience they have litigating high profile cases on behalf of historically oppressed communities as well as Fortune 500 companies.

As legal director of the ACLU of Oregon, Mat worked on a variety of civil right issues including freedom of speech, student’s rights, voting rights, LGBTQ+ rights, immigration, and criminal justice reform. Mat routinely appeared in national and state media to comment on issues of constitutional law and civil rights. During their tenure, Mat was recognized as a “Best LGBT Lawyer Under 40” by the National LGBT Bar Association (2016), and received the Oregon Gay and Lesbian Lawyers Association Award of Merit (2017), Richard M. Ginsburg Outstanding Leadership for Immigrant Rights Award from the American Immigrant Lawyers Association of Oregon (2017), and the Aguila Award from Latino Network in recognition of extraordinary contributions and commitment to ensuring a thriving Latinx community in Oregon (2018).  

Prior to their work at the ACLU, Mat managed litigation and information risk management for a global pharmaceutical company where they oversaw all aspects of commercial litigation. Mat began their career with 6+ years at Morrison & Foerster working on all aspects of patent and securities litigation and was recognized for their contributions in life sciences and technology, writing for PharmaExec.com and speaking at the ABA Life Sciences Legal Summit.  

Mat received an Angel Award from California Lawyer in 2008 for their deep commitment to pro bono work relating to a precedent setting case brought on behalf of transgender prisoners seeking gender affirming care in Idaho’s Department of Corrections. Prior to law school, Mat worked as a biologist and conducted environmental impact assessments and endangered species surveys for power clients throughout the west.  

They are on the board of the Chosen Family Law Center, Latino Network, and served on the board of the Transgender Law Center for 10+ years. Mat received their JD from Cornell Law School and BS in Biology from UC Irvine.

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GET IN TOUCH

PO Box 5181

Eugene, OR 97405

info@ourchildrenstrust.org

The Case

  • Timeline
  • Full Trial Video
  • Trial Details

The People

  • Plaintiffs Side
  • Defendants Side

In the News

  • Media Coverage
  • Press Center

Learning Resources

  • Film & Video
  • Curricula
  • OCT Impact Report

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