Comment ZoomGOV (Score 1) 52
It's entirely due to ITAR and FOUO/CUI restrictions, the same reason why SpaceX almost exclusively hire American citizens.
This is why ZoomGOV exists (slightly different client, most definitely a different, more hardened cloud server, save zoom company).
The same meetings aren't allowed on standard versions of Facebook portal, Google Hangouts, Skype, or any other video service for that matter that isn't explicitly approved for their respective sensitivity.