Falsehoods and fabrications are not protected free speech under the First Amendment.
Thanks to HoughMade for the link...
https://www.politico.com/news/2020/10/14/biden-campaign-lashes-out-new-york-post-429486
Biden’s campaign would not rule out the possibility that the former VP had some kind of informal interaction with Pozharskyi, which wouldn’t appear on Biden’s official schedule. But they said any encounter would have been cursory. Pozharskyi did not respond to a request for comment.