Facebook CEO Mark Zuckerberg has to testify in a case of crypto-currency libra on October 23 before a commission from the US House of Representatives. That became known on Wednesday.

Facebook has confirmed that Zuckerberg will testify. The interrogation is entitled An investigation into Facebook and its impact on the financial services and housing sector .

The libra, which will probably come onto the market at the beginning of 2020, is under heavy fire. Not only in the United States are there votes to block the crypto currency. For example, France recently stated that it will stop the introduction of the currency in Europe. China is also critical.

Critics' concerns include privacy issues, possible money laundering practices that are facilitated by libra, and inadequate consumer protection. The crypto currency could also disrupt monetary policy and jeopardize exchange rates.

Libra was announced in June and must be introduced by 28 cooperating companies, including Uber, Paypal, Spotify and Facebook. Paypal was the first to withdraw from the so-called Libra Association.

See also: Why Facebook's cryptomib libra gets so much criticism