That agreement concerns use of EU data by the US government itself (ie the intelligence community and law enforcement).
It does not give EU citizens any opportunity to enforce claims against US companies in US courts.
There is no treaty. And the GDPR is not "law" in the US. You cannot sue a company for damages in the US like in the EU.
However, there is an executive order that allows you to file a complaint if you think your privacy rights have been violated.
You can find a good explainer here.
Incorrect.
The current data agreement between the US and EU is neither a law nor a treaty. It is an executive order, which means it did not pass through Congress and simply reflects the policy of the current administration. Like any other executive order, it could be ignored or overturned by a subsequent administration.
Furthermore, it does not mean "GDPR is actually the law in the US". It means that the current US administration will cooperate in enforcing certain privacy rights. It does not give EU citizens the same rights they have in the EU under the GDPR. For example, it does not allow private individuals to sue US companies for damages in US courts.
Ok, suppose there is a unified magazine. I post to it, now which instance hosts my post? Then my instance defederates from that of one of the two magazines, but not the other. Do I now see only half the posts? If I engage in a comment chain, will users on the instances that defederated from mine see a weird half-conversation?
I think there is a fundamental difference between centralized formats like Reddit and federated formats like this one. Trying to simulate one with the other will always be unsatisfactory. So if Melpomene and Facedeer really want to join forces, the best way is simply to close one community and let them comoderate the remaining one.
It's silly to judge a polling outfit solely on the politics of their CEO.
FWIW, 538 gave Harris a "B" grade with 83% accuracy in 2020. If anything, Harris seemed to overestimate Biden's support (eg they predicted Trump would lose FL and NC).
The Trans-Atlantic Data Privacy Framework (and subsequent executive orders) protect the EU citizens from misuse of their data by US law enforcement and intelligence communities.
They do not give EU citizens any rights concerning data held only by private companies, apart from the rights all Americans already have.