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The Use and Purpose of National Security Letters (NSLs)

The Justice Department cannot secure our nation against terrorist attack unless investigators are equipped with tools that allow them to disrupt plots before they can be carried out. These same tools must protect civil liberties. National Security Letters (NSLs) satisfy both requirements.

In national security investigations, the FBI must follow up on every tip and every threat. The American people demand as much. NSLs, which predate the USA Patriot Act, enable the FBI to do so quickly and unobtrusively.

An NSL is simply a request for information. It does not authorize the FBI to conduct a search or make a seizure. If the recipient of an NSL declines to produce the requested information, the FBI cannot compel him to do so; only a federal court has that authority.

NSLs are subject to two other important limitations. First, the FBI may issue them only to obtain information relevant to an international terrorism or espionage investigation. They are not available in criminal investigations or domestic terrorism investigations.

Second, they may be used only to obtain narrow categories of information. For example, the FBI may obtain credit-card billing records to attempt to learn the identity of a terrorist suspect. An NSL may not be used to obtain the contents of an e-mail or a telephone conversation. And if the FBI went beyond these legal constraints, the recipient could challenge the NSL in court. In fact, the Justice Department supports amending the NSL statutes to make this right to challenge express where currently it is implied.

The NSL statutes do prohibit an NSL recipient from disclosing the fact that he received it. In international terrorism and espionage investigations, there are obvious reasons for this. If a terrorist were tipped off to the fact that the FBI was asking for his billing records, he might flee, destroy evidence, or even accelerate plans for an attack.

The Department of Justice is committed to protecting the USA against terrorist attack while using its authorities carefully, lawfully and consistent with civil liberties. The NSL authorities facilitate this mission.

From an op-ed by Rachel Brand, assistant attorney general for the Office of Legal Policy at the Department of Justice, and John Pistole, deputy director of the FBI.

 

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