Ottawa's approval of the Trans Mountain pipeline expansion pleased business leaders on Tuesday, June 18, 2019, but they say they will hold off on popping champagne corks until construction begins on new pipe from Edmonton to the West Coast.

If completed, the Trans Mountain pipeline expansion project would triple the capacity of an existing pipeline, allowing it to transport up to 890,000 barrels per day of bitumen and other petroleum products from Alberta's oilpatch, to a marine terminal in Burnaby, B.C.

The federal government is widely expected to green light the Trans Mountain expansion project a second time today,June 18, 2019, but, even with a Yes vote, construction is likely weeks, if not months away.

The Liberal government's $4.5 billion gamble to buy the Trans Mountain pipeline in a bid to get it expanded will come to a head on Tuesday, June 18, 2019, when the federal cabinet decides whether to sign off on the project for a second time.

Indigenous competition for the right to buy an equity stake in the Trans Mountain pipeline system is heating up, with an Alberta group announcing Wednesday it intends to assemble a province-wide coalition of supporters.

A court has ruled that British Columbia cannot restrict oil shipments through its borders in a decision that marks a win for the Trans Mountain pipeline expansion and Alberta's efforts to get its resources to overseas markets.

Ian Anderson, whose job is to operate the Trans Mountain pipeline between Alberta's oilsands and the Pacific coast and oversee a likely expansion, says the tougher rules that come with increased tanker traffic will make the waters around Vancouver safer than if the project never goes ahead. Others disagree.

The Trudeau government says it isn’t satisfied with First Nations consultations on the Trans Mountain oil pipeline expansion project, and is pushing back its deadline to make a decision to June 18.

Alberta's two main political rivals had opposing messages about the Trans Mountain pipeline expansion during their election campaigns on Monday, April 8, 2019.

The federal government’s Environment Department did not consider the Canadian government's $4.5 billion purchase of the Trans Mountain crude oil pipeline and expansion project in its ongoing assessment of corporate handouts to the oil and gas sector, says a new report tabled in Parliament on Tuesday.

Prime Minister Justin Trudeau’s government has been considering an “emergency” warning from scientists about an endangered species for more than a year in a case that could have serious implications for the proposed construction of the Trans Mountain oil pipeline expansion project.

Environmental legislation proposed by British Columbia is specifically targeting the Trans Mountain pipeline expansion and would significantly impact it, the project's proponent and the Alberta government argued on Thursday, March 21, 2019.

British Columbia is not trying to stop the Trans Mountain pipeline expansion, but it is attempting to prevent environmental damage and hold the corporation responsible for the cleanup of a spill, a lawyer argued on Monday, March 18, 2019.

British Columbia's Court of Appeal will consider a key question regarding provincial powers in the political battle over the future of the Trans Mountain pipeline expansion project during a five-day hearing that starts on Monday, March 18, 2019.

Despite ongoing concerns raised by First Nations, the Trudeau government says it's "on track" to conclude its review and make a decision on the controversial Trans Mountain pipeline expansion project, Canadian Natural Resources Minister Amarjeet Sohi said on Wednesday at a major energy conference.