Steven Guilbeault, a Liberal MP and former environment minister, announced he is resigning as a Member of Parliament on Wednesday [1].
The departure of a high-profile climate advocate from within the Liberal caucus signals internal friction regarding the government's environmental trajectory. This move may impact the perceived unity of the party as it navigates climate targets and legislative priorities.
Guilbeault, who represents a Montreal riding, shared the news in a video published on May 26, 2026 [1]. He said he is resigning because of concerns that the Liberal government is not doing enough on climate policy [2].
The announcement took place during a Liberal caucus meeting in Ottawa [3]. Guilbeault has long been viewed as a primary driver of the party's environmental agenda during his tenure as minister.
James Maloney, the Liberal caucus chair, spoke regarding the departure. "He's been a strong voice on climate issues," Maloney said [4].
The resignation follows a period of increasing pressure on the government to accelerate its carbon reduction strategies. While the party maintains its commitment to green goals, Guilbeault's exit suggests a gap between official policy and the expectations of the party's most ardent environmentalists [2].
“He is resigning over concerns that the Liberal government is not doing enough on climate policy.”
Guilbeault's resignation represents a significant loss of internal expertise and advocacy for the Liberal party's environmental wing. By citing policy insufficiency as his reason for leaving, he creates a public narrative of government failure on climate issues, which may embolden opposition parties and environmental lobbyists to demand more aggressive legislative action.
