The Commemorative Works Act of 1986 (Pub.L. 99–652; 40 U.S.C. ch. 89) (CWA) is a United States federal law which bars the construction of commemorative works near the National Mall and on federal land in the National Capital Area unless they are approved by the National Capital Memorial Advisory Commission (NCMAC). The law also establishes criteria a memorial must meet in order to be approved the NCMAC, and establishes a seven-year deadline by which construction must begin or the memorial loses its congressional authorization. As of April 2014, the law has been amended five times, most notably by the Commemorative Works Clarification and Revision Act of 2003 (Pub.L. 108–126 (text) (PDF)).