U.S. Republicans are calling on Twitter CEO to attend next week’s antitrust hearing.

The CEO of Amazon, Apple, Facebook and Google is also expected to appear in a call for Twitter CEO Jack Dorsey to testify at an antitrust hearing next Monday,media reported. In a letter to New York Democratic Judiciary Committee Chairman Jerrold Nadler on Wednesday, Jim Jordan of Ohio said both parties need to hear from Twitter about the power they have in the market, its role in regulating content on the platform, and the reasons behind the security vulnerabilities that have caused its recent high-profile security.

U.S. Republicans are calling on Twitter CEO to attend next week's antitrust hearing.

Jordan called Twitter a “market leader in social media” and said the hearing represented an important and unique opportunity to explore Twitter’s issues.

But Twitter is much smaller than the other four companies that are already preparing to testify, making the antitrust debate against the company more challenging. While size is not necessarily an indicator of anticompetitive behavior in the United States, Twitter’s share of the social media market is much lower than Facebook’s. Last quarter, Twitter reported 166 million profitable daily active users, well below the 1.73 billion daily active users Facebook reported last quarter.

Yet last week’s hacking showed Twitter’s enormous influence with its elite user base of journalists, politicians and CEOs. Hackers can profit from the release of false information and the use of cryptocurrencies through the accounts of celebrities including former Vice President Joe Biden, Tesla CEO Elon Musk and Microsoft co-founder Bill Gates.

Conservatives, including Jordan, argue that Twitter and other technology companies censor their voices through biased algorithms and inconsistent policy applications, which Twitter denies. The company recently appeared to be the focus of conservative anger after it defact-checked and labeled President Donald Trump’s tweets as a violation of the company’s policies. Shortly after, Mr. Trump announced an executive order calling on federal agencies to consider new rules around legal shields to protect online platforms from taking responsibility for their modest behavior and user posts.