>>8267720 (pb)
Not sure if this was mentioned, but unfortunately there is no extradition treaty between the US and the Ukraine, HOWEVER...if Biden is found guilty in the Ukraine, it looks like he will have to serve the sentence in the United States as per the "Convention on the Transfer of Sentenced Persons"
https://ua.usembassy.gov/u-s-citizen-services/arrest-of-a-u-s-citizen/information-u-s-citizens-arrested-ukraine