I think it is important that we leave June 20 as the outside date since the Liberal cabinet was supposed to make the decision for approval on May 22 after the NEB's second recommendation for approval of the Trans Mountain expansion in the national interest. The Liberal cabinet requested the extension for the decision, delaying it by a month with even more uncertainty. The decision is supposed to be made on June 18, so “as soon as possible” would be after June 18, but before June 20.
On May 30th, 2019. See this statement in context.