I heard Democrats are accusing him of possibly lying, but did not see any specific lie that he is alleged to have told. What is the alleged lie?
Yeah, it's vague. This has something to do with what came out during Stone's trail regarding WikiLeaks connections/conversations that doesn't jive with Trump's written responses to Mueller. I'll be surprised if it goes anywhere because Trump's supposed lie is that he didn't recall a particular conversation as opposed to him saying there was no conversation. I think that Trump would have had his lawyers answer Mueller's questions, since they were documented. So, that begs the question, if Trump's legal counsel lies on Trump's behalf, can Trump be held accountable. Frankly, to me it seems like small potatoes.
Remember when I once posted the "where there's smoke, there's fire" comment? It is beginning to look to me like it won't be one big fire but lots of little ones that will cause Trump the most trouble, when all is said and done.