It's one of those cases where you want both sides to lose, heh.
I don't doubt the Attorney General's office are basically grasping in the dark, have no idea what they're actually looking for and probably wouldn't recognise it if they found it. But at the same time, it's right that they should be suspicious of Bitfinex, who have been excessively furtive and rather shady in their dealings around the supposed "fully backed" nature of Tether. It would be genuinely astounding to me if it turns out they really do have $14 billion USD in reserve, but something tells me they're never going to attempt to prove that's the case. Last I heard of this ongoing farce, they'd amended their T&Cs to state that other assets may be used to back Tether, but didn't go into much further detail about what those assets might be.
I'll take this opportunity to give the usual reminder that people should only have funds on exchanges that they can afford to lose, particularly in the case of Bitfinex at the moment. Also, if anyone currently has large sums stored in USDT, consider hedging with some other stablecoins (although, personally, they all sound as scammy and dangerous as each other to me, so I don't actually recommend holding any of them).
I am sorry to stress the fact that Bitcoin and Tether are quite linked together, unfortunately. Hence, if there will be a defeat of both Bitfinex and Tether, Bitcoin will inevitably face a few consequences.
We have seen this already but this could be like an atomic bomb. Look a USDT cap and tell me how that will not reflect on BTC.
tl;dr take your funds out of finex just in case, and avoid using tether to store your wealth until things will look better