OTTAWA — Several Liberal MPs say the party remains united after Culture Minister Steven Guilbeault resigned from cabinet in response to the federal government’s new pact with Alberta on a proposed pipeline.

In a social media post Thursday, Guilbeault said he submitted his resignation to Prime Minister Mark Carney that afternoon “with great sadness” — then spelled out his objections to the prime minister’s reversal of many of the key environmental decisions made by the previous Liberal government.

“Despite this difficult economic context, I remain one of those for whom environmental issues must remain front and centre,” he wrote. “That is why I strongly oppose the memorandum of understanding between the federal government and government of Alberta.”

Guilbeault said he intends to remain o

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