You raise an important point. When we look at essential travel and essential workers, we look at the question of whether the job they do can be undertaken virtually as opposed to them having to be in situ. Sometimes that can be challenging, but sometimes, despite the fact that it's not as good as being there in place, it can be done virtually.
The other factor, of course, is the safety risks associated with having people, let's say, moving back and forth across the border—