Tether and Bitfinex expect a lawsuit as they became aware of an unreleased paper alleging that USDT is involved in market manipulation
Source: https://cointelegraph.com/news/tether-and-bitfinex-expect-a-market-manipulation-lawsuit-official
Tether and Bitfinex Expect a Market Manipulation Lawsuit: Official
October 5, 2019
CoinTelegraph