read library signs before you check out

“Warning: Although the Santa Cruz Library makes every effort to protect your privacy, under the federal USA Patriot Act (Public Law 107-56), records of the books and other materials you borrow from this library may be obtained by federal agents.”
“Federal law prohibits library workers from informing you if federal agents have obtained records about you.”
Reuters: Libraries Warn of FBI Spying on Reading Habits.

And:
“Questions about this policy should be directed to Attorney General John Ashcroft, Department of Justice, Washington, D.C. 20530.”
San Francisco Chronicle: Santa Cruz warns readers that FBI may spy on them.