Fucking dig into him until he rage quits the interview, then show that on the news. Stop asking soft questions and letting them get away with lies. Reporters these days are becoming as guilty as the media themselves allowing these assholes to lie constantly and not calling them out immediately. Make them squirm and be accountable!
If the actual courts won't convict him then every man woman and child has to see him as a feckless liar, a pathetic toady that will say anything to get what he wants. He should never have peace outside of his house if he wants to act like this
Or better yet - don't interview him at all. Do an exposé piece on him that details everything and run it primarily in his district if you want to actually affect change.
The fact that he's being interviewed only adds to his credibility, and no matter what happens here, people are going to think he's just misunderstood, since "He'd be in jail if this were all true, right?"
I love the one where he's being interviewed and the question is about what you do for Thanksgiving or something, his opponent is like, "oh yeah just good times with the family, we always get Haagen Dazs ice cream for a special treat." Then Santos is asked and he's like, "oh yeah I love those good times with family and Haagen Dazs ice cream, such a special time every year."