The corporation may—
((1)) adopt and amend a constitution, bylaws, and regulations for the admission, government, suspension, and expulsion of its members;
((2)) adopt and alter a seal;
((3)) provide for the election of its officers and define their duties;
((4)) provide for State societies or chapters with regulations for their conduct, and regulate and provide for the management, safe-keeping, and protection of their property and funds;
((5)) acquire, own, lease, encumber, and transfer property as necessary or convenient to carry out the purposes of the corporation; and
((6)) sue and be sued.