Among other allegations, the WSJ outlined how Tether was repeatedly denied accounts at New York's Signature Bank, and so ultimately got an executive at an aviation fuel broker called AML Global to open an account that appeared to be used to fraudulently process transactions on behalf of Tether and Bitfinex.
Tether is the largest stablecoin in circulation, though its entire existence has been marred by questions around its legitimacy and the status of its claimed reserves.