From Tether's Terms of Service on https://tether.to/legal:
"Tethers are not money and are not monetary instruments. They are also not stored value or currency. There is no contractual right or other right or legal claim against us to redeem or exchange your Tethers for money. We do not guarantee any right of redemption or exchange of Tethers by us for money. There is no guarantee against losses when you buy, trade, sell, or redeem Tethers."
I don't know why it even matters if there is money in the bank, if there is no commitment by Tether to use it to redeem Tethers.
Incidentally, there is no mention anywhere in the TOS of any obligation by Tether to maintain bank reserves to back up Tethers. There is this though:
"No Representations & Warranties: We make no representations, warranties, or guarantees to you of any kind, including with respect to any right of redemption or exchange of Tethers for any property. The Site and the Services are offered strictly on an as-is, where-is basis and, without limiting the generality of the foregoing, are offered without any representation as to merchantability or fitness for any particular purpose."
No guarantees of any kind? What about this from Tether's home page:
"100% Backed
Every tether is always backed 1-to-1, by traditional currency held in our reserves. So 1 USD₮ is always equivalent to 1 USD."
Isn't that a guarantee? Well it happens that there is a neat little clause in the TOS stating that if there is a conflict between the TOS and something else on the site, the TOS wins!
There is a lot more eye-opening stuff in the TOS. Read it, and consider the possibility that it means what it says.
Thanks for sharing this. This is indeed eye-opening and equally worrisome. For those who can, it will always be better to xchange your BTC/ETH etc on an exchange that offers USD/EUR etc trading, like Coinbase or Kraken.