(a) Every domestic insurer may comply with any law of any state or political subdivision imposing any license, excise, privilege, premium, occupation or other fee or tax, and pay such fee or tax, unless prior to such payment the law shall have been expressly held invalid by the state court having final appellate jurisdiction in the premises or by the Supreme Court of the United States.
(b) No officer, director or trustee of any insurer shall be subject to personal liability by reason of any payment, or determination not to contest payment, deemed by the board of directors or trustee to be in the corporate interests of the insurer, of any license, excise, privilege, premium, occupation or other fee or tax to any such state or political subdivision, unless prior to such payment the law imposing such fee or tax shall have been expressly held invalid by the state court having final appellate jurisdiction in the premises or by the Supreme Court of the United States.