They do not have the ability to "exonerate" anyone or not, that is a meaningless line meant as a crumb to the believers, probably an attempt to prevent them being lynched by the left.
You nailed it. Lets face it politics is a dirty business right or left. Don't expect to find truth where there is prejudice for the cause, right or left. Is Mueller a democrat BTW? Is he a lefty? Take the Lewinsky thing what was behind that whole thing, the guy gets a blow job by a intern over 18yr old, so what? don't make a federal case out of the whole dam thing.