Be careful now... Bill Clinton was impeached for lying about a blowjob. Lying about Russia smells worse, particularly with Biff not disclosing his tax returns, lying about business connections in Russia, Biff loving Putin, Russia howling at Flynn getting sacked, Russia behind the wikileaks emails, Manaforte's Ukraine/Putin connection... more smoke.
Biff been pretty open and honest with the public over his feelings with Putin and Russia, to the point his honesty is concerning some people.