Russia

 Josh Marshall notes that the Trump-Russia scandal was perhaps the real missed opportunity from the Trump years. Mueller's investigation was too narrow. Barr's memo - a lie - sullied the narrow findings anyway. 

The evidence is pretty clear that there was some form of coordination between Trump's campaign and Russia. It's not clear if Trump was directly involved but Manafort clearly was.

Because the Russia scandal never tied everything up into a prosecutable case, every subsequent investigation of Trump's brazen lawlessness is presumed on the Right to be just another attempt to smear him with a "hoax" like the Russia investigation.

This is why it's important for the DOJ to go slow. Trump's recent court filings over the FBI search of Mar A Lardass demonstrate that he's getting pretty shitty legal counsel. That happens when you famously don't pay your bills. Nevertheless, getting a Trump conviction - not an indictment - is the only possible outcome that pays off. Otherwise, it feeds into Trump's narrative of persecution by the Deep State.