“A comprehensive index of presidential signing statements issued between 2001 and 2007. The index, compiled by Neil Kinkopf, associate professor of law at Georgia State University College of Law and former special assistant in the Office of Legal Counsel at the Department of Justice, provides a comprehensive list of every provision of a law objected to by the White House in a signing statement, the reason for the objection, and a link to the relevant signing statement. The index of presidential signing statements is a companion piece to an issue brief written by Professor Kinkopf, Signing Statements and the President’s Authority to Refuse to Enforce the Law, that analyzes whether and when the President may refuse to enforce a law that the President regards as unconstitutional.”