An employee shall not use his public office for his own private gain, for the endorsement of any product, service or enterprise, or for the private gain of friends, relatives, or persons with whom the employee is affiliated in a nongovernmental capacity, including nonprofit organizations of which the employee is an officer or member, and persons with whom the employee has or seeks employment or business relations. . . . An employee shall not use or permit the use of his Government position or title or any authority associated with his public office in a manner that is intended to coerce or induce another person, including a subordinate, to provide any benefit, financial or otherwise, to himself or to friends, relatives, or persons with whom the employee is affiliated in a nongovernmental capacity.