U.S. Senator Orrin Hatch on Thursday added to the growing push in Washington to have the Federal Trade Commission rekindle an antitrust investigation of Alphabet Inc’s Google.

Hatch, the Republican chairman of the Senate Finance Committee, sent a letter to FTC Chairman Joseph Simons recounting several news reports that identified complaints about Google’s anti-competitive conduct and privacy practices.

Alphabet shares were little changed after the release of the letter. The company declined to comment.

Lawmakers from both major parties and Google’s rivals have said this year they see an opening for increased regulation of large technology companies under the FTC’s new slate of commissioners.

Google’s critics say that ongoing European antitrust action against the web search leader and this year’s data privacy scandal involving Facebook Inc and political consulting firm Cambridge Analytica demonstrate their concerns about the unchecked power of the tech heavyweights. About 90 percent of search engine queries in the United States flow through Google.

Facebook and Twitter executives are expected to testify before the Senate Intelligence Committee on September 5 about their  efforts to deter foreign campaigns from spreading misinformation online ahead November’s midterm elections. Lawmakers have criticized Alphabet for not scheduling a top executive, such as Chief Executive Larry Page, for the hearings.

In 2013, the FTC closed a lengthy investigation of Google after finding insufficient evidence that consumers were harmed by how the company displayed search results from rivals. President Donald Trump accused Google’s search engine on Tuesday of promoting negative news articles and hiding “fair media” coverage of him.

Trump’s economic adviser, Larry Kudlow, later said the White House was “taking a look” at Google, and that the administration would do “some investigation and some analysis,” without providing further details.

Earlier this year, Representative Keith Ellison, a Democrat, and Representative Todd Rokita, a Republican, sent separate letters asking the FTC to probe Google.

Simon, the new Republican chairman of the FTC, said in July the agency would keep a close eye on big tech companies that dominate the internet.

An FTC representative was not immediately available for comment.

Hatch, at event hosted by reviews website and Google rival Yelp Inc in May, said moves made by “an entrenched monopolist” deserve extra skepticism.

“They may well be used, not to further consumer welfare, but to foreclose competitors,” he said, according to prepared remarks.

Yelp, a local-search service, said in a statement that Hatch’s letter was “heartening to see” as it underscored the bipartisan plea for FTC scrutiny of Google.
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