"Rather, we focused on whether the evidence was sufficient to charge any member of the campaign"
Part of "sufficient" includes all aspects of the evidence. DJTJ's meeting in Trump Tower with the Russians was an illegal act, but part of the law requires proof the perp KNEW he was breaking the law...and Mueller concluded he couldn't prove DJTJ was knowledgeable enough to know the law.
It's odd: usually, it's "ignorance of the law is no excuse". Here, DJTJ's (presumed) ignorance worked to his favor.
"I never head you pegged as a loony conspiracy theorist."
Who had control over the laptop?
Be specific.