There are many red flags surrounding the cryptocurrency Tether (USDT). The first is the lack of transparency surrounding the cryptocurrency.
source https://www.google.com/url?rct=j&sa=t&url=https://www.thestreet.com/technology/tether-stablecoin-causing-complications-for-bitcoin-14748722&ct=ga&cd=CAIyGmM2Nzk3ODA2ZWViNjVjODI6Y29tOmVuOlVT&usg=AFQjCNGANLwvF-a2TjQ-eudHcJwMMchVcw