Full Breakdown
Montana Supreme Court Denies Youth Plaintiffs' Challenge to 2025 Environmental Laws
1/3/2026, 12:18:36 AM
Court's Decision on Climate Litigation
On December 23, 2025, the Montana Supreme Court unanimously rejected a petition from 13 young plaintiffs, known as the Held group, who sought to challenge three environmental laws passed by the state’s Republican-controlled Legislature earlier that year. The court ruled that the plaintiffs did not meet the necessary “emergency” threshold to bypass lower courts, meaning their legal challenge could take years to resolve. The laws in question revise the environmental review process and limit how state agencies assess greenhouse gas emissions for large projects.
Background of the Held Case
The plaintiffs previously succeeded in a landmark case, Held v. Montana, where they argued that the state has a constitutional obligation to protect the climate under the right to a “clean and healthful environment.” This ruling, affirmed by the Montana Supreme Court, established that a stable climate is part of this constitutional right. However, the new legislation, which includes Senate Bill 221 and House Bill 285, has been criticized for undermining these protections by preventing state agencies from regulating greenhouse gas emissions and weakening the Montana Environmental Policy Act (MEPA).
Legislative Context
The 2025 laws were passed in April and signed into law by Governor Greg Gianforte on May 1. Senate Bill 221 mandates that state agencies must inventory emissions from large projects but prohibits them from regulating these emissions. House Bill 285 significantly alters MEPA, which has been in place since 1971, by removing key environmental protections. House Speaker Brandon Ler, who sponsored one of the bills, stated that the legislation aims to prevent environmental groups from using MEPA to obstruct responsible development.
Official Statements & Responses
Roger Sullivan, the attorney representing the plaintiffs, expressed disappointment with the Supreme Court's decision but acknowledged the court's procedural stance, emphasizing that the matter should be addressed in district court. He indicated that the plaintiffs are considering their next steps, potentially filing a new case, dubbed Held v. Montana II, in district court. Meanwhile, Ler praised the court's ruling for respecting due process and the separation of powers.
Criticism & Opposition
Environmental advocates and the plaintiffs argue that the new laws exacerbate climate-related harms and fail to uphold the constitutional rights established in the previous Held ruling. They contend that the legislation effectively allows for increased fossil fuel development without adequate environmental oversight. The plaintiffs' legal team, represented by the nonprofit Our Children’s Trust, argues that the laws will lead to irreversible climate injuries.
Conflicting Reports & Gaps
The Supreme Court's order did not evaluate the merits of the plaintiffs' challenge but focused on procedural grounds, stating that district courts are equipped to handle such constitutional challenges. The court noted that the plaintiffs filed their petition seven months after the laws took effect, raising questions about the urgency of their claims.
What's Next
The plaintiffs plan to pursue their challenge in district court, with hopes that the legal precedent set by the original Held case will expedite the process. The outcome of this new litigation could have significant implications for environmental policy and climate action in Montana.
