U.S. to disclose estimate of surveilled Americans by early 2017 -letter

WASHINGTON, Dec 15 (Reuters) - The U.S. intelligence

community has committed to providing as soon as next month a

public estimate of the number of U.S. persons whose electronic

communications are ensnared under a surveillance authority

intended for foreign espionage, according to a bipartisan group

of congressional lawmakers' letter that Reuters saw.

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