Yeah, tether is owned by Bitfinex actually so there is some issues with it.

The withdrawals of USD is paused right now, and obviously Tether will have some issues as well.

Hopefully they can sort out the issues asap because USDT is one of my favourite ways to exchange my bitcoins for fiat and vice versa instantly without any verification. It's still trading at $0.93 though, dunno where it's going to go next.