Thank you for clarifying that. I think that's helpful for everybody listening today, as many of those challenges are in working with our neighbours in clearance and pre-clearance when going to the U.S.
For the next question, I want to go to Ms. Lutfallah from PHAC.
My question is about masking. Does the rationale for masking still apply? Could you provide some comments on that? We've seen over the last number of years a conversation on masking. We saw, early on in Alberta, a lack of action by many prominent Conservatives on the issue of implementing masking, and cities taking it into their own hands to do so to protect their citizens.
I want to know, from a public health perspective, the rationale for requiring masking. Does it still apply?