Trading for US Poloniex customers ceased on November 1, 2019, following Poloniex's separation from Circle to focus on the international market, leading to the exclusion of U.S. customers. These customers are urged to withdraw their assets by December 15, 2019, using the newly established Poloniex US Withdrawal site, as they can no longer use Poloniex mobile applications. Despite this change, Circle's other services such as Circle Trade, Circle Invest, and USDC remain unaffected. U.S. customers can withdraw their assets to another exchange or wallet and are encouraged to use resources like CoinMarketCap or CoinGecko to find compatible platforms. Support is available for U.S. customers on the designated site, while non-U.S. customers can continue using existing support channels. Circle continues to focus on enhancing global financial inclusivity and efficiency.