The withdrawals of USD is paused right now, and obviously Tether will have some issues as well.
There have been plenty of rumors that Tether might collapse, so the fact that they're blocking withdrawals only makes me more skeptical. Now is probably a good time to cash out if you can.
For those who are unable to cash out via Tether I would advise transferring to an exchange and then trading for something else as fast as possible. It's really not looking good for Tether at the moment.