2 U.S. Code § 168c
2 U.S. Code § 131 is about Printing and distribution of decennial editions and supplements to Constitution Annotated. It is under Chapter 5 (Library of Congress) of Title 2 (The Congress) of the Code.
Additional copies of each hardbound decennial revised edition and of the cumulative pocket-part supplements thereto shall be printed and distributed in accordance with the provisions of any concurrent resolution hereafter adopted with respect thereto.