absent that, i don't see why the USA government would give a shit at all about these alleged victims or these cases. i don't believe for a second that they just intervene in any and every civil ambulance chasing lawsuit in foreign jurisdictions, especially during these times.
i think it's exactly what @gentlemand said: this is the equivalent of patent trolling. they just want an easy payday, settled out of court. scumbag litigation lawyers, doing what they do best.
I hope you're right. I'm just used to seeing the most influential countries (USA nowadays, Russia less so nowadays than in the past) or organizations (EU, UN, etc.) either act shadily or in an authoritarian manner to have things done in other countries as their whim dictates.