Seeking to justify or describe their positions on the implementation of the law .
Explanation:
It's a written statement that the president makes occasionally when he signs a bill. James Monroe was the first president to make a statement of sign.
Just about a dozen signature documents were released between the time of Monroe and the 1980s. Ronald Reagan then inaugurated a period of unprecedented declaration in 1981. This depends on whether the number of resolutions and the number of laws challenged are counted, but Ronald Reagan, George H.W. Bush, Bill Clinton, and George W. George Bush have opposed roughly a hundred legislation.
By issuing about 20 signature declarations Barack Obama has maintained this new tradition.