It's not one person, it's an entire criminal organization that merged with the GOP. And it is not in the personal best interest of anyone with a modicum of power to do anything about it, so nothing will be done.

"The President in particular is very much a figurehead — he wields no real power whatsoever. He is apparently chosen by the government, but the qualities he is required to display are not those of leadership but those of finely judged outrage. For this reason the President is always a controversial choice, always an infuriating but fascinating character. His job is not to wield power but to draw attention away from it. On those criteria Zaphod Beeblebrox is one of the most successful Presidents the Galaxy has ever had — he has already spent two of his ten presidential years in prison for fraud."