Turns Out Feds Actually Tracked Most International Calls For Nearly A Decade Before 9/11 -- Didn't Stop The Attack

The now-discontinued operation, carried out by the DEA's intelligence arm, was the government's first known effort to gather data on Americans in bulk, sweeping up records of telephone calls made by millions of U.S. citizens regardless of whether they were suspected of a crime. It was a model for the massive phone surveillance system the NSA launched to identify terrorists after the Sept. 11 attacks. That dragnet drew sharp criticism that the government had intruded too deeply into Americans' privacy after former NSA contractor Edward Snowden leaked it to the news media two years ago.

In the drug-trafficking operation, the N.S.A. has been helping the Drug Enforcement Administration in collecting the phone records showing patterns of calls between the United States, Latin America and other drug-producing regions. The program dates to the 1990s, according to several government officials, but it appears to have expanded in recent years.

Officials say the government has not listened to the communications, but has instead used phone numbers and e-mail addresses to analyze links between people in the United States and overseas. Senior Justice Department officials in the Bush and Clinton administrations signed off on the operation, which uses broad administrative subpoenas but does not require court approval to demand the records.

The data collection began in 1992 during the administration of President George H.W. Bush, nine years before his son, President George W. Bush, authorized the NSA to gather its own logs of Americans' phone calls in 2001. It was approved by top Justice Department officials in four presidential administrations and detailed in occasional briefings to members of Congress but otherwise had little independent oversight, according to officials involved with running it.

The DEA used its data collection extensively and in ways that the NSA is now prohibited from doing. Agents gathered the records without court approval, searched them more often in a day than the spy agency does in a year and automatically linked the numbers the agency gathered to large electronic collections of investigative reports, domestic call records accumulated by its agents and intelligence data from overseas.

The result was "a treasure trove of very important information on trafficking," former DEA administrator Thomas Constantine said in an interview.

The DEA obtained those records using administrative subpoenas that allow the agency to collect records "relevant or material to" federal drug investigations. Officials acknowledged it was an expansive interpretation of that authority but one that was not likely to be challenged because unlike search warrants, DEA subpoenas do not require a judge's approval. "We knew we were stretching the definition," a former official involved in the process said.

Officials said a few telephone companies were reluctant to provide so much information, but none challenged the subpoenas in court. Those that hesitated received letters from the Justice Department urging them to comply.

After Sprint executives expressed reservations in 1998, for example, Warren, the head of the department's drug section, responded with a letter telling the company that "the initiative has been determined to be legally appropriate" and that turning over the call data was "appropriate and required by law." The letter said the data would be used by authorities "to focus scarce investigative resources by means of sophisticated pattern and link analysis."

To keep the program secret, the DEA sought not to use the information as evidence in criminal prosecutions or in its justification for warrants or other searches. Instead, its Special Operations Division passed the data to field agents as tips to help them find new targets or focus existing investigations, a process approved by Justice Department lawyers. Many of those tips were classified because the DEA phone searches drew on other intelligence data.

That practice sparked a furor when the Reuters news agency reported in 2013 that the DEA trained agents to conceal the sources of those tips from judges and defense lawyers. Reuters said the tips were based on wiretaps, foreign intelligence and a DEA database of telephone calls gathered through routine subpoenas and search warrants.

As a result, "the government short-circuited any debate about the legality and wisdom of putting the call records of millions of innocent people in the hands of the DEA," American Civil Liberties Union lawyer Patrick Toomey said.

For one thing, DEA analysts queried their data collection far more often. The NSA said analysts searched its telephone database only about 300 times in 2012; DEA analysts routinely performed that many searches in a day, former officials said.