Cryptocurrency exchange Bittrex announced that it will block access to 32 assets for its U.S.-based users
Source: https://cointelegraph.com/news/crypto-exchange-bittrex-to-block-us-users-from-trading-in-32-cryptos
Crypto Exchange Bittrex to Block US Users From Trading in 32 Cryptos
June 9, 2019
CoinTelegraph