There's currently one open source software dev / researcher in the US who's facing prison time after talking about open source software at a conference in North Korea. His name is Virgil Griffith. The speech he gave was nothing more than information that was already public.
He's also known for the WikiScanner.
More details here: https://www.forbes.com/sites/jasonbrett/2020/01/11/internet-...
His personal home page http://virgil.gr/