What a pity.
On one hand it's strange (situation should be and shall be under control there...) but on the other hand it is also reasonable: the next to come ATM 2020 Las Vegas is too near to present and - actually - the global COVID-19 situation is still too dynamic to have now a reliable forecast regarding a possible natural resolution.
In Europe a lot of corporate events/fairs have been cancelled yet or, at best, have been postponed.
It seems instead that the HPE Discover 2020 in Las Vegas (June 23 - 25) - expected to open its doors just about 3 months after the ATM 2020 in the same city - was not affected by a similar decision (yet).
My feeling is that the situation will not be fixed anytime soon (for sure not during the next Week)...and June is simply just around the corner.