Canada’s ambassador to the US to step down ahead of key trade talks BBC December 10, 2025 Kirsten Hillman has been a central figure in Canada-US trade talks since 2017, and was appointed ambassador in 2020.About The Author BBC See author's postsPost navigationPrevious: The Star Who Represents Iran’s Golden Age—And Its FutureNext: What Explains Trump’s Aggression Against Venezuela? Who Knows?