The manner of appointment of Commission members, terms of office, provisions for removal and suspension, and manner of appointment to fill vacancies shall be determined by each party state pursuant to its laws, but each member shall be a resident of the state of appointment. Commission members shall serve without compensation, but the actual and necessary expenses incurred by a Commission member in the performance of duties shall be met by the state which the member represents, according to its laws.
Okla. Stat. tit. 66, § 329