The Globe and Mail reports in its Thursday, Nov. 2, edition that Catherine McKenna, Prime Minister Justin Trudeau's former environment minister, urged him on Wednesday to reverse his carbon price exemption for home heating oil. The Globe's Marieke Walsh writes that at the same time, the Conservatives ratcheted up a pressure campaign intended to force the Liberals to further soften their carbon pricing policies. On Wednesday, a week after Mr. Trudeau announced the heating oil exemption, Conservative Leader Pierre Poilievre tabled a motion that will force all MPs to vote on whether the exemption should be expanded. The PM has already said that the government will not exempt any other heating fuels from the carbon price, and will not make any other changes to the federal policy. The non-binding vote in the House of Commons, however, will put the spotlight on backbench Liberal MPs, as well as New Democrats, who support the minority government in Parliament. Ms. McKenna said the government has "confused carbon pricing with affordability." Ms. McKenna disputed the government's rationale for exempting heating oil, saying the carbon price is "critically important" to getting people to stop using the fuel.