The World Health Organisation declared on November 26th that the Omicron variant of the coronavirus was “of concern and countries responded differently to that; Japan, Morocco and Israel banned all foreigners. Australia delayed its planned reopening. The Netherlands and Denmark demanded that all travellers from southern African countries isolate themselves for several days, then produce negative results from covid tests. Slovenia required that such travellers quarantine for ten days, test or no test while American response was muted. Why do you think America was mute on this ?