Let's analyze what Mueller said.
"If we could have exonerated President Trump of obstruction we would have done it."
Mueller also could have said, conversely; "If we could have indicted President Trump for obstruction we would have done it."
FACT: The SC did not and does not have the authority to indict or exonerate. The SC gathers evidence and gives it to the AG to make that decision. Similar to the FBI; FBI gathers info but does not indict or exonerate. Info is handed to DOJ to make the decision.
So, both above statements would be true. SC could not exonerate/indict because it's not their job.
So, Mueller is saying, "if it was our job to exonerate the President, we would have done it." Repeat: "if we had the power to exonerate POTUS, we would have done it."
Of course, MSM is gonna spin it to fit their anti-Trump agenda and feed it non-stop to the leftist and normie sheep.
Meme this info; copy/pasta this info and flood twatter, FB, everywhere to get the normies to understand exactly what Mueller said.