NEW YORK (NYTIMES) - Mr Adam Mosseri, the head of Instagram, has agreed for the first time to testify before the United States' Congress, as bipartisan anger mounts over harms to young people from the app.

Mr Mosseri is expected to appear before a Senate panel during the week of Dec 6 as part of a series of hearings on protecting children online, said Senator Richard Blumenthal from the Democratic Party in Connecticut. Mr Blumenthal will lead the hearing.

Mr Mosseri's appearance follows hearings this year with Ms Antigone Davis, global head of safety for Meta, the parent company of Instagram and Facebook, and with Ms Frances Haugen, a former Facebook employee turned whistleblower.

Ms Haugen's revelations about the social networking company, particularly those about Facebook and Instagram's research into its effects on some teenagers and young girls, have spurred criticism, inquiries from politicians and investigations by regulators.

In September, Ms Davis told Congress the company disputed the premise that Instagram was harmful for teenagers and noted that the leaked research did not have causal data.

But after Ms Haugen's testimony last month, Mr Blumenthal wrote a letter to Meta chief executive officer Mark Zuckerberg suggesting that his company had "provided false or inaccurate testimony to me regarding attempts to internally conceal its research".

Mr Blumenthal asked that Mr Zuckerberg or Mr Mosseri testify in front of the consumer protection subcommittee of the Senate's Commerce Committee to set the record straight.

"He's the top guy at Instagram, and the whole nation is ask...