Paradoxically, Tether which is truly sketchy as all fuck esp in terms of "backing", might be more secure against some regulatory risk by moving around and hiding off in some obscure financial haven and obscure shell ownership structure and carrying on (which is what it's been doing all along). USDC is very likely to do exactly what regulators say for better or worse.
RE: pHBD is 1:1 Backed with HBD On the Hive Blockchain | Mechanics Deep Dive