; and (B) not including any transaction necessary to preserve a person’s right to representation as guaranteed by the Sixth Amendment to the Constitution of the United States. . (b) Table of sections The table of sections for subchapter II of chapter 53 of title 31, United States Code, as amended by section 18 of this Act, is amended by adding at the end the following: 5334. Prohibition on concealment of the source of assets in monetary transactions. . 20. Rule of construction Nothing in this Act, or any amendment made by this Act, shall be construed to apply to the authorized law enforcement, protective, or intelligence activities of the United States or of an intelligence agency of the United States.