Mueller has a long history of accusing the wrong guy.I think the Mueller investigation arrested Stone as a distraction from the shutdown.According to televised news reporting Stone is charged with witness tampering, giving false statements, and obstruction of justice.
I suspect this will affect Donald's handling of the shutdown. He'll probably use it aa distraction, continue yelling at democrats. The smarter thing would be to end the shutdown, to distract by claiming a victory.
Everyone knows Mueller has a long law enforcement career of distracting people from pretty political theater.