US citizen Client lives and works in Singapore but returned to the US in 2021 for the 1st time in 3 years to take care of some rental property he owns.  His stay in the US was scheduled for 21 days but while he was in the US, Singapore closed it's doors from anyone returning for months due to COVID-19.  I know there is a provision for having to leave a country due to COVID-19, but what about not being able to get back home/work?  He has been able to work remotely from the US.