Changes

Surveillance and privacy became some of the biggest civil liberties issues after 9/11, and my boss David Theroux at the [http://www.independent.org/ Independent Institute] urged me to write something in light of the NSA revelations. I had mostly focused on civil liberties in my work there. After my first book, which explored the historical and legal problems posed by detention policy and habeas corpus, surveillance made a lot of sense.

<b>When did the American government start spying on both foreign nationals and its own citizens? What did they hope to achieve?</b>