EXCLUSIVE: Trump’s actions so alarmed FBI after Comey firing that it began investigating if he was working for Russia @adamgoldmanNYT @npfandos https://t.co/uP52f8m2qf— Michael S. Schmidt (@nytmike) January 12, 2019
That's it. That's the whole post. It looks bad because it is bad, but then, it has always looked bad.
UPDATE: I'm adding to this port the further story from The Washington Post that Trump has gone to great lengths to conceal what has been said during meetings with Russians, to the extent that Russia has records of these communications and the US does not. This is also an "Of course!" moment, because of course! that is how you would expect someone to behave who is working on behalf of Russia, not the US.
Trump has been suspiciously weird about his communications in other ways--take the odd story that there were aides who have to follow him around with tape because of his habit of ripping up documents, or the yet more bizarre tale from Omarosa Manigeault Newman that she caught him literally chewing up notes after a meeting with Michael Cohen.
But the May 10, 2017 meeting with Lavrov and Kislyak was notably weird because it was closed to US press, but a Russian photographer was allowed, and classified information was revealed to them. But it would seem less weird if one took it as being how Trump would behave if he felt he owed something to Russia (like ROI for the election assistance?)
We can debate how "witting" an asset Trump actually is; but what is right in front of us is fishy as hell.