I think, again, with hindsight, at that time there weren't a lot of cases. If you had asked policy-makers at the time whether they would have closed the border— I'm not going to second-guess what they may think now—with all the lessons learned and knowing that some instantaneous travel restrictions are an option with, of course, the society willing to take all the different consequences of that—
On May 19th, 2020. See this statement in context.