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Georgetown Law Library

Presidential Signing Statements Research Guide

This guide is a starting point for researching presidential signing statements and their significance in the U.S. legal system.


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When presidents sign bills into law, they sometimes issue written statements expressing their views on those bills. These written statements are known as "presidential signing statements." Presidents often use signing statements to express their intention not to enforce parts of legislation that they consider to be unconstitutional, or otherwise provide an interpretation of the law as executive branch agencies will be directed to enforce it.

Since at least the Reagan era, scholars, jurists, and others have debated whether presidential signing statements should be considered as legislative history for purposes of interpreting federal statutes. In a recent example, U.S. Supreme Court Justice Antonin Scalia disagreed with his fellow justices' disregard of a signing statement related to the Detainee Treatment ActPub. L. No. 109-148, §§ 1005-1006, 119 Stat. 2736 (2005). Hamdan v. Rumsfeld, 548 U.S. 557 (2006) (Scalia dissenting). In March 2009, President Obama issued a memo to the heads of executive departments and agencies in which he opined "In appropriately limited circumstances, [presidential signing statements] represent an exercise of the President's constitutional obligation to take care that the laws be faithfully executed, and they promote a healthy dialogue between the executive branch and the Congress."

This guide is intended as a starting point for research about presidential signing statements. It is not a comprehensive listing of all materials on the subject. For help finding other types of presidential documents, consult the Library's Presidential Documents Research Guide or contact the Georgetown Law Library reference desk at (202) 662-9140. You may also submit questions live online via Chat with a Librarian during reference hours or request a research consultationappointment to discuss more in-depth research with a librarian.

Online Resources

  • American Presidency Project, Presidential Signing Statements: Hoover to Obama. Browsable database of signing statements from 1929 to the present.
  • FAQs about Signing Statements. Answers detailed questions such as "How many signing statements did George W. Bush issue?" and "Who drafted signing statements for President Bush?" Also provides links to numerous articles and blog posts.
  • Law Library of Congress, Presidential Signing Statements. This research guide cites recent cases, articles, hearings and bills related to presidential signing statements.

Update History

Created January 2007 (SKB)
Updated April 2011 (MK)
Revised May 2013 (AJC)

Updated July 2015 (MK)