(2) A person is eligible for appointment as a commissioner of the Port of Portland who at the time of the appointment is a citizen of the United States and of the State of Oregon, and who has for one year immediately preceding appointment resided within the State of Oregon. [Amended by 1961 c.469 §1; 1971 c.403 §17; 1971 c.728 §126; 1973 c.178 §3; 1987 c.179 §1; 1997 c.461 §1]