Tether is not located in the US, so is outside of US jurisdiction.

I think they need 3rd party audits, but as far as I know, they don't do it. Which is very curious why no one else replicates tether with 3rd party auditing.

Clearly more people are investing USD to tether considering the new USDT they issued, despite problems with withdrawals? Or are the withdrawal problems over?

Can anyone comment on the tether blockchain, is it centralized? How secure is it?