The head of a union representing Canadian customs and immigration officers said that the chronic staff shortage means that long wait times at the border will not necessarily disappear when the use of the controversial ArriveCan app soon becomes optional. Mark Weber, the national president of the Customs and Immigration Union, warned that if travel volumes start to increase significantly, there will be "significant delays" at Canadian border points. Weber also spoke at a Commons committee examining the ArriveCan app to provide travel and public health information before and after people enter Canada, where the Cabinet order imposing vaccine mandates at the border and the use of ArriveCan for inbound travelers expires on Friday and the government says it will not be renewed. Weber says the Canada Border Services Agency needs thousands of other officers to fulfill its mandate and also urges the government to hire more staff to maintain the flow of goods and people across the border, rather than relying on technologies like the poorly designed and reputed ArriveCan app.