littlebabyjesus
one of Maxwell's demons
A requirement of a fortnight's self-isolation would pretty much put paid to non-essential travel all on its own, I would think.All non-essential travel should be stopped at least until there's an international surveillance system capable of tracking Covid-19 cases, and anyone crossing borders should be quarantined for the necessary period, at least 14 days, perhaps longer. Our supposedly border-obsessed government has been lethally laissez faire.
I dunno if I would advocate that, though, as it only really makes sense as a measure if, like SK, you're actually in a position to realistically aim for zero new infections. But testing of everyone at borders is sensible - the heuristic to work with here at the moment has to be 'don't travel around any more than you need to' whether that travel involves crossing borders or not.