A Utah senator has written a formal letter to the Federal Trade Commission asking it to "reconsider the competitive effects of Google's conduct in search and digital advertising."

In a two-page document released Thursday, Sen. Orrin Hatch (R-Utah) noted that, when the FTC closed its previous investigation into the search giant in 2010, it partly based its decision on the expectation that Apple would become a "strong mobile advertising network." This did not pan out.

As Ars noted a year ago, Google is under renewed pressure from both the conservative and liberal ends of the political spectrum.

Not only did the FTC examine Google in 2010, it also did so in 2012. That's when the commission's competition unit urged a lawsuit that was ultimately overruled by the FTC's commissioners, who voted unanimously not to pursue charges against Google.

Google did not immediately respond to Ars' request for comment.

Separately, Google has been under fire from President Donald Trump , who told Bloomberg News that large tech companies, including Google, had "treated conservatives very unfairly." He provided no evidence for this claim.

In particular, on Wednesday, Trump tweeted a video that claimed, incorrectly, that Google did not feature his first speech to Congress as president.

"On January 30, 2018, we highlighted the livestream of President Trump's State of the Union on the http://google.com homepage," Google said in a statement sent to the press.

"We have historically not promoted the first address to Congress by a new president, which is technically not a State of the Union address. As a result, we didn't include a promotion on http://google.com for this address in either 2009 or 2017."