I’d still like to know more about that - it seems curious to me ... and would suggest bio warfare, that 3 chinese nationals would get to our border in such time.
CPAC live stream: https://cpac.conservative.org/attend/live/
Chinese have been trying for years, in 2016 about 80/mo. The stats are by sector, TX 700/2018; 1300/2019. The richer they get, the more the border sees.