Citibank, J.P.Morgan, and Bank of America have banned the purchase of cryptocurrencies.

People with both debit and credit cards of the above 3 mentioned banks will now not be able to purchase Bitcoin or other cryptocurrencies like Ethereum, Iota, Ripple, and others.

It is said that they have done so because cryptocurrencies are very high-risk as a form of investment.

Further reading: Citi Bank bans credit, debit card transactions for purchasing bitcoins, other cryptocurrencies 

Further reading: Citibank, J.P.Morgan, and Bank of America bar use of credit cards for buying bitcoins, other cryptocurrencies