03/15/2009 05:12 am ET | Updated May 25, 2011

Canadian Activists To Obama: Don't Buy Canadian Oil!

The campaign--which kicked off Tuesday with an ad in Roll Call, a Capitol Hill newspaper--features print ads and a new website, as well as asking Canadians and Americans to send petitions to the prime minister and president. Both leaders have expressed inter-est in crafting a North American climate-change deal that could include a cap-and-trade emissions reduction program.

"The message is, 'Don't buy our dirty oil,' " said Jean Langlois, campaign adviser with the Sierra Club. "It's a concern of ours that the Canadian government is still out of step with the international efforts to curb greenhouse gas emissions and climate change."