Presidential Signing Statement

A presidential signing statement is a document the U.S. President attaches to legislation at the moment of signing. Statements generally fall into three types: rhetorical (praising the bill or thanking legislators), interpretive (offering the executive's reading of ambiguous language to guide agency implementation), and constitutional (asserting that certain provisions infringe on executive authority and signaling that the President may decline to enforce them as written).

The practice dates to James Monroe and Andrew Jackson but was used sparingly until the 20th century. It expanded sharply under Ronald Reagan, whose Attorney General Edwin Meese arranged in 1986 for signing statements to be published in the United States Code Congressional and Administrative News alongside legislative history, with the explicit aim of influencing judicial interpretation. Use continued under George H.W. Bush and Bill Clinton, then drew major controversy under George W. Bush, who challenged provisions in hundreds of laws, including the McCain Detainee Amendment within the Detainee Treatment Act of 2005.

In 2006 the American Bar Association issued a task force report concluding that signing statements used to claim authority to disregard duly enacted laws are "contrary to the rule of law and our constitutional system of separation of powers." Critics argue the device functions as a de facto line-item veto, which the Supreme Court struck down in Clinton v. City of New York (1998). Defenders note Presidents have an independent duty to interpret the Constitution and may decline to enforce provisions they believe unconstitutional.

Barack Obama issued a 2009 memorandum pledging restraint and consultation with the Attorney General before issuing constitutional objections, though he continued the practice. Subsequent administrations have used signing statements at lower volumes than the Bush years but have not abandoned them. Courts rarely give signing statements interpretive weight, but agencies often follow them, making the device a significant tool of intra-executive policy direction.