Globe and Mail: As President Barack Obama unveiled the first major regulations to reduce greenhouse-gas emissions in the United States, his ambassador in Ottawa urged Canada to do the same and take action to combat climate change.
It is a reminder to Prime Minister Stephen Harper of the political challenge he now faces: His chief climate-change policy has been to match U.S. action, but now the Americans are getting more aggressive, and publicly suggesting Canada act too.
U.S. Ambassador to Canada Bruce Heyman,...