Portfolio Release Attachments 31 of the Fourth Release (04-15-13) for Freedom of Information Act Request HQ-FOI-01268-12, Competitive Enterprise Institute v. EPA, C.A. No. 1:12-cv-01617. Including 6 photographs of the U.S. and Canadian ministers signing documents.You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.