(1) adopt and amend a constitution, bylaws, and regulations to carry out the purposes of the corporation;
(2) adopt and alter a corporate seal;
(3) establish and maintain offices to conduct its activities;
(4) make contracts;
(5) acquire, own, lease, encumber, and transfer property as necessary and appropriate to carry out the purposes of the corporation;
(6) establish, regulate, and discontinue subordinate State and territorial subdivisions and local chapters or posts;
(7) publish a magazine and other publications;
(8) sue and be sued; and
(9) do any other act necessary and proper to carry out the purposes of the corporation.