Actually, under a strict interpretation of the law, what he did was criminal - "sexual interference". The question then is why no charges, and, as Vern White said the other day, there are a number of reasons why the prosecutor (not police) decided not to proceed with charges. This includes whether the victim chose to cooperate with a prosecution and testify, whether prosecutors thought there was a reasonable prospect of conviction, etc.

You see, as a Senator, Meredith was in a position of power / authority that he abused to groom her.  Clearly, he offered her and her family benefits that he was able to confer. There is clearly an arguable case for criminal conviction there, but the exact set of circumstances has probably never been before a court.

So, in this regard, the case is clearly differentiable from Toews and it has nothing to do with Meredith being black.