Roger&Me
Bluelighter
Does that include a guy Mueller sees jaywalking on the way to the office?
No, but if jaywalking were a federal crime (it's obviously not) and in the course of his investigation Mueller uncovered evidence of jaywalking, he could charge the suspected jaywalker with that crime if he wanted to. That's not even unique to this situation, it's pretty much the general rule for any police activity. For example, if a police officer pulls you over and smells weed in your car, and then he searches your car for the weed and ends up also finding an unlawfully carried handgun (or stolen goods, or whatever), he doesn't have to ignore the handgun just because he found it while he was looking for evidence of marijuana possession. It would be perfectly lawful and appropriate to charge you with any crime consistent with the evidence found.