The American Presidency Project at the University of California, Santa Barbara has archived all Presidential Signing Statements from Herbert Hoover through George W. Bush.
You can search or browse by year. The signing statements are part of a much larger documents section that includes executive orders, proclamations, “fireside chats” and more.
The Project site also includes a “data” section with information such as a table of vetoes and “success rate”, a section on presidential elections data (statistics) and more.
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