Usually when having any kind of public function you are covered by an ethics framework that expects you to come forward whenever you are involved in taking any

Usually when having any kind of public function you are covered by an ethics framework that expects you to come forward whenever you are involved in taking any decision that can look like a conflict of interest. Even if it is not a crime it should still be reason for dismissal. If nothing is done it incentivizes any person in a position with power of decision to try to benefit from it by simply hiding behind the feeble and unprovable claim that "it's totally unrelated".