[stockpirate]

How could they come here after the closure of our border with China

[Scrambler Bob]

How could they come here after the closure of our border with Chin
- = =

Badly written sentence. Too many clauses, ambiguous time references.

Maybe the sickness showed up after the closure, or not, as you ask about.

[woodbutcher1963]

I doubt they flew in on American Airlines.

Did these border closures apply to people flying in on private jets ? Yes, I am sure you have to present passports when you land at LAX, SF or Sea/Tac. However, people who are billionaires get much different treatment than you and me.