Comment by x3c

This particular case was overreach by Github and not the US Lawmakers.

https://home.treasury.gov/policy-issues/financial-sanctions/...

  118. I have a client that is in Iran to visit a relative. Do I need to restrict the account?

  A: No. As long as you are satisfied that the client is not ordinarily resident in Iran, then the account does not need to be restricted. See FAQ 37. 

Source: https://twitter.com/Hamed/status/1346433510786138114/photo/1