Documents show Pentagon now using FBI to spy on Americans

ACLU obtains documents after suit over National Security Letters

The military is using the FBI to skirt legal restrictions on domestic surveillance to obtain private records of Americans' Internet service providers, financial institutions and telephone companies, according to Pentagon documents.

The American Civil Liberties Union expressed outrage at the new revelations, based its conclusion on a review of more than 1,000 documents turned over by the Defense Department after it sued the agency last year for documents related to national security letters, or NSLs, investigative tools used to compel businesses to turn over customer information without a judge's order or grand jury subpoena.