Compensation may be paid out of aids provided

The Postmaster General may give effect to the provisions of these Regulations as to the loss or damage of registered postal packets, insured letters and insured boxes, and of articles enclosed in or forming part of a registered postal packet, insured letter or insured box, out of such aids or supplies as may be from time to time provided and appropriated for that purpose, but nothing contained in or done under or in pursuance of these Regulations shall render him liable either personally or in his official capacity to any action or other legal proceeding in respect of or in consequence of any such loss or damage. The decision of the Postmaster General on all questions arising between him and any person claiming payment in respect of the loss or damage of a registered postal packet, insured letter, or insured box or of any article enclosed in or forming part thereof shall be final and conclusive.