Here is a summary of Article II of the latest Bylaws.
Membership shall be composed of any warrant officer or former warrant officer who holds a warrant or commissioned status in the Coast Guard, Army, Navy, Air Force, or Marine Corps, and of the retired rolls, reserve and other components of these services. Membership shall be of three classes: Regular, Associate, and Honorary Members (see Bylaws for descriptions).
Members that are more than one year in the rears shall be notified via email by the Secretary. If dues are not received within 30 days of notification, members are automatically dropped from chapter membership until dues are paid.