Liberals carbon tax
The question kept coming up in the House of Commons.
In fact, it generates contradictory reactions.
Liberals seek "pan-Canadian" framework.
Tory MP charges that the PM "accidentally told the truth."
Ministers from N.S., Saskatchewan also hit the road.
The premier claimed Justin Trudeau isn't honouring his election promises.
MPs set to debate Paris accord.
Ex-Grit leader called for 'bold leadership' 8 years ago.
Canada has spotty record keeping carbon-cutting promises.
"The do-nothing option is not there."