The face-to-face comes after Trudeau, whose government is struggling with a pipeline crisis at home, pitched Canada as a great place to invest by telling hundreds of business leaders "that big things can get done in Canada".
Ottawa, which approved the project in 2016, insists it has jurisdiction.
"It's not clear to me anyway where the market is for Kinder Morgan given that the diluted bitumen, which they hope to ship was going to largely go to California, which could be served by served by an extension off the Keystone XL", Weaver said.More news: CBO projects deficit to hit $1T by 2019
"That will require us to talk with the project proponent", Morneau told a Toronto news conference.
"You know, if there is waffling in any level of government that's not healthy and if the provincial government digs in too hard on any opposition to a project without getting public feedback is a concern and I think you need to in the consultation period be a bit flexible and it just looks the government is saying it's a no go".
It also offers Trudeau an opportunity to take stock of Mexico's position - and perhaps share strategies - before the prime minister heads into a meeting with U.S. Vice-President Mike Pence on Saturday.More news: Launching Uber Movement in Toronto
Horgan has called on the federal government to join the reference case to help settle the matter once and for all, though Federal Finance Minister Bill Morneau rejected the idea on Wednesday. "Public threats, in my estimation, aren't helpful". "It received provincial approval because of five conditions that the BC Liberals put on the project, and it's time for us to abide by the constitution of Canada and get on with the project". Substantial work has not yet begun, however, thanks to protests from environmental groups and court challenges that aim to prevent construction.
BC is also part of a lawsuit against Ottawa arguing there was not proper consultation with Indigenous communities or other stakeholders when the pipeline was reviewed. "With this case, they made a decision that's upset the other side and you have to realize people protest a number of these issues but my thinking is if they are that concerned about the environment what are they doing to reduce they're own carbon footprint and reduce their gas consumption, it's a hard issue".
But in the three days since, Notley is making an even more outrageous offer: Alberta could buy the Trans Mountain pipeline project outright and take the federal government as their investment partner!More news: Donald Trump warns Russian Federation of 'nice, smart' missile attack on Syria
Kinder Morgan has said it wants questions over the project's future resolved by the end of next month.