Huobi Global has announced that it will freeze all U.S. customer accounts on Nov. 13, nudging American users toward its other platform, HBUS
Source: https://cointelegraph.com/news/huobi-global-to-freeze-us-customer-accounts-by-mid-november
Huobi Global to Freeze US Customer Accounts by Mid-November
November 5, 2019
CoinTelegraph