1. Short title This Act may be cited as the Conserving Ecosystems by Ceasing the Importation of Large Animal Trophies Act or the CECIL Act . 2. Amendment to prohibited acts Section 9(a)(1) of the Endangered Species Act of 1973 ( 16 U.S.C. 1538(a)(1) ) is amended by striking subparagraph (A) and inserting the following: (A) import into or export from the United States any species listed or proposed to be listed under section 4(c) as a threatened species or endangered species