I assume that is the point of having a Greenpeace USA -- to shield Greenpeace International and other Greenpeace organizations from liability. And it seems to have mostly worked.

Looking at the history ( back in the 1970s )- it appears to be in part the reverse - when Greenpeace USA was created, the original greenpeace, based in Vancouver, had a quarter of a million debt - and there was a bit of a fight over it.

https://www.upi.com/Archives/1981/12/11/TEXT-OMITTED-FROM-SO...