It's conventional wisdom in media and Democrats (often the same people) that raising issues about Bill Clinton is sexist, wrong and unfair to Hillary Clinton.
The Donald is finding those in the MSM who say what he is doing is not without merit. Hitting on subordinates is less acceptable these days and a reminder of the things you don't like about the Clintons might just relegate them to the same pile as JEB !.
I don't think people want more Bushes and Clintons, and The Donald knows that.
Trump’s right — Hillary Clinton has a “Bill problem” | Miami Herald