Airport cops: we don't keep track of your books (unless they're *suspicious* books)

After yesterday's story about how airport cops are assembling files on travellers' reading material, the a DHS spokesman has hotly denied keeping track of the titles of the books you read -- unless those books are, you know, suspicious.
"I flatly reject the premise that we care at all about the latest Tom Clancy novel a traveler is reading," Knocke said.

"But the fact does remain that CBP officials are going to be mindful of whether there is anything that suggests there could be possible violations of a law associated with a traveler or items in possession of a traveler as they make an admissibility decision about that traveler," Knocke said. "That is what they are charged by Congress to do."

Link (Thanks, Xeni!)