Senator Jim Jordan called in Message Until Microsoft faces the same antitrust measures as other big tech platforms.
In the letter, Jordan asks the Microsoft chief if he thinks the company is affected by a set of antitrust laws introduced in the House of Representatives earlier this month.
There are five laws in all, ranging from giving more money to antitrust enforcement to banning big tech platforms from buying smaller competitors.
The package of antitrust laws followed a years-long investigation into Amazon, Apple, Facebook and Google.
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The measures focus on the anti-competitive behaviors of these four companies, and it is not clear how they affect other large companies such as Microsoft.
While Microsoft meets the criteria set forth under these laws, such as meeting a market capitalization of more than $600 billion and 50 million monthly active users, the laws are not targeted at the company’s specific business.
In his letter, Jordan said that major technology companies, including Microsoft, are seeking to attract conservatives. And it’s unclear why Microsoft has evaded so much interest from House Democrats.
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Microsoft would face the same proposed criteria in takeovers, such as shouldering the burden of proof and making the data it takes from users more portable and usable across other platforms.
But as Amazon and Apple face more structural changes, Microsoft likely won’t be subject to the rules.
Jordan’s message comes as disagreement grows among House Republicans over the package.
While all five bills were sponsored by Republican and Democratic participants, they are not supported by all Republicans.
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The Wall Street Journal reported last week that House Minority Leader Kevin McCarthy did not support the bills.
Jordan also appears to be opposed to the measures, opting to take various measures against tech companies, such as reforming Section 230 of the Communications Decency Act, to go after platforms that allegedly censor conservative speech.
Earlier this month, lobbyists for Rupert Murdoch’s media companies, including Fox Corp and News Corp, were urging House Republicans to vote for the bills.