US President Donald Trump on Thursday criticized Bitcoin, Facebook’s proposed Libra digital coin and other cryptocurrencies and demanded that companies seek a banking charter and make themselves subject to US and global regulations if they wanted to “become a bank.” “I am not a fan of Bitcoin and other Cryptocurrencies, which are not money, and whose value is highly volatile and based on thin air,” Trump wrote on Twitter. “If Facebook and other companies want to become a bank, they must seek a new Banking Charter and become subject to all Banking Regulations, just like other Banks, both National and International,” he added. Facebook said last month it would launch its global cryptocurrency in 2020. Facebook and 28 partners, including Mastercard Inc, PayPal Holdings Inc. and Uber Technologies Inc, would form the Libra Association to govern the new coin. No banks are currently part of the group. JPMorgan Chase & Co, the largest US bank by assets, plans to launch its own digital coins. Trump’s comments come one day after Federal Reserve Chairman Jerome Powell told lawmakers that Facebook’s plan to build a digital currency called Libra could not move forward unless it addressed concerns over privacy, money laundering, consumer protection and financial stability. Powell said the Fed had established a working group to follow the project and was coordinating with other countries’ central banks, several of which have also expressed concern about Facebook’s digital currency project.