I understand. That factor makes things difficult. People are tested, but if they have no symptoms, how do we ensure that things do not develop differently thereafter? Basically, there can be false negatives that are not because of the test itself but rather because of the nature of the illness.
Let us go back to the beginning of the pandemic last March. The Public Health Agency of Canada issued no messages at all about the importance of closing the border. Thereafter, we saw an extremely rapid increase in the number of cases in Canada. Elsewhere in the world, however, things happened much sooner.
Had the Public Health Agency of Canada previously recommended that the government close the border before it was done?