As a young Justice Department lawyer, Supreme Court nominee Samuel A. Alito Jr. tried to help tip the balance of power between Congress and the White House a little more in favor of the executive branch.
In the 1980s, the Reagan administration, like other White Houses before and after, chafed at the reality that Congress's reach on the meaning of laws extends beyond the words of statutes passed on Capitol Hill. Judges may turn to the trail of statements lawmakers left behind in the Congressional Record when trying to glean the intent behind a law. The White House left no comparable record.
In a Feb. 5, 1986, draft memo, Alito, then deputy assistant attorney general in the Office of Legal Counsel, outlined a strategy for changing that. It laid out a case for having the president routinely issue statements about the meaning of statutes when he signs them into law.
Such "interpretive signing statements" would be a significant departure from run-of-the-mill bill signing pronouncements, which are "often little more than a press release," Alito wrote. The idea was to flag constitutional concerns and get courts to pay as much attention to the president's take on a law as to "legislative intent."
"Since the president's approval is just as important as that of the House or Senate, it seems to follow that the president's understanding of the bill should be just as important as that of Congress," Alito wrote. He later added that "by forcing some rethinking by courts, scholars, and litigants, it may help to curb some of the prevalent abuses of legislative history."
http://www.washingtonpost.com/wp-dyn/content/article/2006/01/01/AR2006010100788.html