1) Tether is supposed to be backed 1:1 by USD.
2) There are now $1.7 Billion in tehters outstanding
3) They were turned down by all reputable banks they approached.
4) They have printed $450 million of tethers in the past week
https://coinmarketcap.com/currencies/tether/historical-data/...
Just ask yourself honestly..... do you really believe that there is a reputable bank anywhere in the world that would allow them to hold $1.7 Billion in an account and additionally make a deposit of $450 million in a single week?
Ocams razor says this can't possibly be true.