Washington Post article:

The FBI is visiting libraries nationwide and checking the reading records of people it suspects of having ties to terrorists or plotting an attack, library officials say.

The FBI effort, authorized by the antiterrorism law enacted after the Sept. 11 attacks, is the first broad government check of library records since the 1970s when prosecutors reined in the practice for fear of abuses.

Note that it is illegal under the Patriot Act for a librarian to state that they have turned over records to the FBI. The FBI has to obtain a search warrant from a secret court and must only "show it has reason to suspect that a person is involved with a terrorist or a terrorist plot – far less difficult than meeting the tougher legal standards of probable cause, required for traditional search warrants or reasonable doubt, required for convictions."

This country is becoming a police state.