1 U.S. Code § 107
1 U.S. Code § 107 is about Parchment or paper for printing enrolled bills or resolutions. It is under Chapter 2 (Acts and Resolutions; Formalities of Enactment; Repeals; Sealing of Instruments) of Title 1 (General Provisions) of the Code.
Enrolled bills and resolutions of either House of Congress shall be printed on parchment or paper of suitable quality as shall be determined by the Joint Committee on Printing.