Has he? By losing one house he now has someone else to blame when the economy collapses.
Nothing to do with that, meetings with the wrong people, money from the wrong places, debts to the wrong institutions, some of his direct interference in various departments (census is the recent one) all point to some very difficult times ahead for him.
Muller isn’t onto nothing and some of that dirt will stick with the greater Republicans rather than what people think is his base.
After that he can move onto his mistakes in politics