With regard to the requirement for fully vaccinated travellers to have a recent negative COVID-19 test before crossing the land-border or face a $5,000 fine: (a) was this decision based on any scientific research, other than political science, and, if so, what specific scientific studies or data was it based on, and what are the specific website locations where the studies and data is located; (b) has the government conducted a cost-benefit analysis of maintaining the test requirement, either molecular or antigen, and, if so, (i) who conducted the analysis, (ii) what were the findings; and (c) what specific criteria or metrics must be met (i) at the land border, (ii) on flights from travellers from the United States, (iii) on flight from other international travellers, before the antigen test requirement for returning travellers is dropped, and on what dates does the government anticipate meeting each of these metrics or criteria?
In the House of Commons on April 5th, 2022. See this statement in context.