Comment by wahern

I'm not sure about the most recent successful charge, but this is one of the charges used against James Comey: https://en.wikipedia.org/wiki/Prosecution_of_James_Comey

Here's a 2018 article listing some prosecutions: https://www.nbcnews.com/politics/congress/5-people-who-lied-...

Because it's the DoJ prosecuting, I think it's uncommon for the government to prosecute administration witnesses, even from previous administrations. Once upon a time Congress would prosecute and impose punishment itself: https://en.wikipedia.org/wiki/Contempt_of_Congress#Inherent_...