Basically they counterfeit dollar bills

. It should be against the law if you ask me. They take 1 dollar fiat, and they create 1 dollar digital, but they use both.
They can't use both

.
If they take the $ from somebody they must give them the usdt.
If there is no such person and they print it out of thin air, then there is no $ at all.
tether is not 100% backed anymore since it was hacked once and 35 million usdt where stolen
its not even backed with usd, most risky fiat worldwide.
Well, I thought the bolivar, the rubble, the Turkish lira, the Zimbabwean dollar, the peso and so on are riskier.
Good to know, going to change my 100$ bill to some truck full of ZW$.