The top Republican on the U.S. House of Representatives Energy and Commerce Committee asked Google (GOOG.O: Quote, Profile, Research) chief executive Eric Schmidt on Wednesday to detail the search engine's privacy practices since it acquired rival DoubleClick. "It is critical that Google's and DoubleClick's policies and procedures for handling this information be transparent, and that every effort is made to protect consumers' data," Texas Rep. Joe Barton wrote in a letter to the company dated May 21.

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