Do you think he operates like that? Everything I’ve read about Mueller says that he’s a straight shooter, methodical and follows the law to the letter.
If he’s targeting Trump, then Trump is right, it’s a witch hunt. The only way I’m completely comfortable with him targeting Trump is if he already has enough evidence to charge him with something and he wants to build a watertight case.
That's how prosecutors work. They arrange their workflow in order to go for the head of the organization. He's not targeting Trump for political reasons, he's simply going after the biggest fish in the pond.