Charles Lane: The Mueller message we’ve missed

There’s a lot we still don’t know about the contents of special counsel Robert Mueller’s report on his two-year investigation into possible collusion between President Donald Trump’s 2016 campaign and Russia’s Putin regime or its affiliates — beyond the headline finding of no such conspiracy.

It’s not too early to derive some lessons, though, the first and most important of which is that no deus ex machina is going to descend into America’s continuing political tragedy (or farce, if you prefer) and rescue us all from the Trump administration.

Far too many people, including many who should have known better, placed their hopes in a decisive bombshell from Mueller, even while the special…