A series of laws passed in the 1970s promised the nation unprecedented transparency in government, a veritable "sunshine era." Though citizens enjoyed a new arsenal of secrecy-busting tools, officials developed a handy set of workarounds, from over classification to concealment, shredding, and burning. It is this dark side of the sunshine era that Jason Ross Arnold explores in the first comprehensive, comparative history of presidential resistance to the new legal regime, from Reagan-Bush to the first term of Obama-Biden.

After examining what makes a necessary and unnecessary secret,...