Jason Kenney happily joined Ontario counterpart Doug Ford in the Democrats' doghouse Saturday as the Alberta premier criticized progressive presidential hopefuls who have vowed to block the controversial Keystone XL pipeline expansion.

With Ford seeking shelter from the blowback for telling off House Speaker Nancy Pelosi and Vermont Sen. Bernie Sanders the day before, Kenney chose to lean in, accusing certain Democratic presidential contenders — he did not name names — of betraying a close neighbour and of all but endorsing energy imports from "regressive regimes" in the Middle East.

"Many of them, quite rightly, admire Canada as a progressive liberal democracy, as a close friend and ally of the United States," Kenney said, answering a question he hadn't been asked during a joint news conference in Washington with Ford, Saskatchewan Premier Scott Moe, Quebec's François Legault and Blaine Higgs of New Brunswick.

"Why then would they threaten to tear up an agreement that will be the basis of a multi-billion-dollar Canadian investment in this country to become an even bigger and more reliable secure source of energy?"

Democratic candidates on Keystone XL

Sanders, an Independent from Vermont, has signed on to a pledge to block Keystone XL if he becomes president, as has his progressive rival, Massachusetts Sen. Elizabeth Warren.

Others, like Minnesota Sen. Amy Klobuchar, former vice-president Joe Biden and Pete Buttigieg — the mayor of South Bend, Ind., and a presumptive front-runner along with Sanders following last week's problem-plagued Iowa caucuses — have been hedging their bets.

Kenney likened opposing Keystone XL to endorsing ever more imports of Middle Eastern "OPEC dictatorship" oil, calling their stance a tacit endorsement of "regressive regimes that have zero environmental transparency, lower environmental standards and no respect for human rights — in many cases, regimes that spread violence, conflict and extremism around the world."

"Why are they prepared to do great economic damage to their closest friend and ally, the most progressive and liberal source of energy on Earth, when they don't threaten to ban OPEC imports into the United States?"

The Keystone XL pipeline would bring oil from Hardisty, Alta., to Steele City, Neb. One of the key risks cited in this project, the political risk in the U.S. jurisdiction, where much of the pipeline is located, is largely out of control of the Alberta government. (Natalie Holdway/CBC)

Ford and Kenney are part of a five-premier delegation that is in the U.S. capital to promote trade ties with state leaders and to celebrate and reinforce the importance of the Canada-U.S.-Mexico Agreement, which needs only ratification in Canada's House of Commons after President Donald Trump signed an American implementation bill amid much White House fanfare last week.

Ford pulled focus from that mission Friday when, in a livestreamed panel discussion at the Canadian American Business Council, he described the prospect of a Sanders presidency as "scary" and chastised Pelosi for ripping up her copy of Trump's remarks following Tuesday's State of the Union speech on Capitol Hill.

The premier sounded somewhat chastened on Saturday when asked to elaborate.

"Let me tell you why I'm here," Ford said.

"I'm laser-focused on making sure we work with other governors — and I don't care what political stripe they're from; they can be Democrats, they can be Republicans. I'm going to work with whomever gets elected ... to make sure we continue on job creation, economic development, building relationships. That is the reason we are here."

Kenney has already made it clear that getting the on-again, off-again Keystone XL project back in gear is high on his agenda this weekend, which may explain his tactics Saturday in choosing to draw some of the fire away from Ford.

"This friendship, this alliance, has to be a two-way street," he said.

"One of the greatest things that Canada represents to this country is energy security and energy independence. As long as that energy is needed in this country, I think Americans would rather that it be developed in North America by North Americans, including Canadians, rather than shipped over here by Saudi Arabia and OPEC dictatorships."

WTO rumours

Ford would not acknowledge "rumours" that the White House is considering a withdrawal from the World Trade Organization's $1.7-trillion General Procurement Agreement, a long-standing compact aimed at protecting shared access to government contracts around the world from domestic protectionist policies. Deputy Prime Minister Chrystia Freeland said Friday that she raised the matter with U.S. trade ambassador Robert Lighthizer, but would not elaborate.

With similar procurement provisions that once covered Canada under NAFTA no longer in the CUSMA, protectionist sentiment in the U.S. under so-called "Buy American" laws could become a new challenge for Canadian businesses and governments in an era of managed trade.

"That is precisely why we are here — building our relationships with our respective counterparts and anyone we can, quite frankly, within the U.S. administration," said Moe, who is leading the delegation as this year's chairman of the Council of the Federation.

CUSMA notwithstanding, Canada and the U.S. still have no end of trade irritants to wrestle with, Moe said, including Keystone, the ever-present softwood lumber dispute, country-of origin labelling rules that restrict Canadian imports and the U.S. threat of again using Section 232, the U.S. trade provision that Trump — the self-proclaimed "Tariff Man" — used against Canadian steel and aluminum producers throughout 2018 and 2019.

"That relationship is what is important when you come to these times when you have to rely on that relationship to discuss your way through this."