Busson was born as Beverley Ann MacDonald[5] on August 23, 1951, in Halifax, Nova Scotia. She joined the Royal Canadian Mounted Police in 1974 after graduating with an education degree. She would later earn a law degree from the University of British Columbia.[6]
Rising up the ranks, Busson has worked for the RCMP in Salmon Arm, Vancouver, Ottawa and North Battleford, Saskatchewan (Assistant Commissioner and Commanding Officer in Saskatchewan). Prior to her appointment she was Deputy Commissioner for the Pacific Region (2000–2006) and took a leave from the force to head British Columbia's Organized Crime Agency (1999–2000).
Senate of Canada
During debate on use of the Emergencies Act, in relation to the Freedom Convoy protests in Ottawa, Busson stated in Senate that Ottawa had become an "amusement park for anarchists." She urged the Act be kept in place, noting encampments near Ottawa, "so these people do not again overwhelm the people who are trying to protect us;"[7] Prime Minister Justin Trudeau stopped use of the Act later that day.[8]