Donald Trump Lies Blatantly about Russia Hacking Report

We know Donald Trump lies, and does so when it is easily debunked. He lies for no good reason, about things people know are untrue. He lies about things he's lied about! His "truth teller" status during the election was and remains baffling, because he's known to be a worse liar than even the most dishonest politician. Hillary Clinton, long tarred with that brush, actually comes out close to the top of the heap of most honest politicians. So, go figure.

But with this Russia thing? He lied about something rather enormous. And still hasn't come clean. What did he know, and when did he know it? This will haunt his entire presidency, however (hopefully) short it is.