14 U.S.C. § 658 : US Code - Section 658: Confidential investigative expenses

Search 14 U.S.C. § 658 : US Code - Section 658: Confidential investigative expenses

Not more than $45,000 each fiscal year appropriated for necessary
expenses for the operation of the Coast Guard shall be available
for investigative expenses of a confidential character, to be
expended on the approval or authority of the Commandant and payment
to be made on his certificate of necessity for confidential
purposes, and his determination shall be final and conclusive upon
the accounting officers of the Government.