Crypto exchange Poloniex will stop offering trading in nine coins for U.S.-based customers due to uncertain regulations in the country
Source: https://cointelegraph.com/news/poloniex-stops-offering-nine-coins-in-us-due-to-uncertain-regulations
Poloniex Stops Offering Nine Coins in US Due to Uncertain Regulations
May 17, 2019
CoinTelegraph