Ontario's premier is joining a growing number of politicians condemning Donald Trump's decision to pull out of the Paris climate-change agreement.
Kathleen Wynne says the U.S. president's rejection of the 190-country agreement to reduce greenhouse gas emissions is appalling and shows he is abandoning his responsibility to fight the biggest threat currently confronting the world.
Wynne's criticism on Friday comes after the federal environment minister called Trump's decision disappointing and suggested the president was costing the U.S. a key opportunity to profit from the inevitable growth of clean-tech initiatives around the globe.
Wynne says co-operation between sub-national governments has become even more important after Trump's announcement, and she pledged to continue to work with other leaders, particularly U.S. governors, to combat climate change.
Ontario's Liberal government launched a cap-and-trade program this year, which puts caps on the amount of pollution companies in certain industries can emit and allows polluters to buy allowances at auction or from other companies that come in under their limits.
Ontario is expected to join the Quebec-California carbon market next year.