Steven Guilbeault, a Liberal MP and former environment minister, announced Wednesday that he will resign his seat in the House of Commons this summer [1].
The departure of a high-profile environmental advocate from the Liberal caucus signals internal friction regarding the federal government's current climate strategy. Guilbeault's exit highlights the tension between national environmental goals and provincial industrial interests.
Guilbeault said the decision to leave politics was driven by the Ottawa-Alberta memorandum of understanding (MOU) on environmental policy [2]. He said the agreement conflicted with his principles, making his continued presence in Parliament untenable.
"The Ottawa-Alberta MOU led to my decision to resign as an MP," Guilbeault said [2].
While the former minister will remain a Liberal MP until his official departure this summer [1], he indicated that his discomfort with the policy direction is not an isolated feeling. He suggested that other members of the government may share his concerns regarding the compromise made with Alberta.
"I'm not the only one who's uncomfortable," Guilbeault said [2].
Guilbeault represents a riding in Quebec and previously served as the lead official responsible for Canada's environmental portfolio. His resignation follows a period of intense negotiation between the federal government and the Alberta province over emissions, and energy regulations. The announcement was made on May 27, 2026 [1].
“"The Ottawa-Alberta MOU led to my decision to resign as an MP"”
Guilbeault's resignation underscores the difficulty the Liberal government faces in balancing aggressive climate targets with the economic and political realities of oil-producing provinces. By citing the Ottawa-Alberta MOU as his primary reason for leaving, Guilbeault is framing the agreement as a concession that undermines environmental integrity, potentially emboldening other climate-focused members of the caucus to push for a policy reversal.
