First it was the Federal Trade Commission and now the US Senate plan to hold hearings to air concerns about Google Inc.'s proposed acquisition of Web advertising supplier DoubleClick Inc, reports Reuters.

"The Senate's antitrust subcommittee is planning a hearing this autumn to delve into how the combination of the companies will affect competition in the market for Internet advertising, a source familiar with the plans said Wednesday. The panel is expected to ask executives from Google, as well as Microsoft Corp and Yahoo! to appear, the source said. In addition, the Wall Street Journal reported that a House Commerce subcommittee is also planning a hearing on the Google-Doubleclick deal and would focus on privacy concerns."

While on the other hand, Google said they were "confident that upon further review the Federal Trade Commission will conclude that this acquisition is good for both competition and privacy and should be approved."

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