The purposes of the corporate credit union are to:
(1) Accumulate and prudently manage the liquidity of its member credit unions through interlending and investment services;
(2) Act as an intermediary for credit union funds between members and other corporate credit unions;
(3) Obtain liquid funds from other credit union organizations, financial intermediaries, and other sources;
(4) Foster and promote in cooperation with other state, regional, and national corporate credit unions and credit union organizations or associations the economic security, growth, and development of member credit unions; and
(5) Provide payment systems and correspondent services to its members.