Legal Question in Family Law in Wisconsin

Unfortunately the mother tends to have an advantage when it comes to child custody, however, fathers are gaining and that tendancy is starting to even out a bit. Believe it or not what you described is a fairly common experience. Many people avoid confrontation by turning a "visit" into fulltime. Not to mention there are a lot of folks willing to make up stories to try and strengthen their case. Your son can do many things to help his case. E.g. start a journal of his interactions with her and his child. This alone will likely make talking with a lawyer worthwhile.

Your question brings up many questions from a lawyers perspective. E.g. where did they locate from? how long have they been in the State of Wisconsin? Is she accusing him of abuse to her, the kids or are they based upon some other issue like drug use? Without knowing answers to those questions it is impossible to provide any guidance. Because initial consultations typically discuss your matter in very general terms, I suggest you buy an hour of a lawers' time so that s/he will review your facts and give you specifc advice relating to your situation.

I am sorry you son has to go through this terrible experience. I wish you both the best.