You're right about a lot above. I would clarify though that Obama's deal was made by paying $150B+ to Iran (releasing frozen assets), which was immediately used to fund terrorists and conflicts in Syria, Yemen, Iraq etc.

US withdrew from JCPOA under Trump (which led to a certain chain of events), but Biden was not able to revive it during his term. Not clear why we think a different president would be able to, and under what terms/concessions.

It was $100B more like $50B once you subtract the obligations which unfroze with the assets. We are quarreling over a pittance compared to what we will spend at the pumps and on the war, though.

I wonder what wonderful things all the Russian and Iranian (!) oil that Trump lifted sanctions on will fund! We will find out in time.

Kamala had a better shot at reviving the deal for the same reason Trump thought he had a chance at regime change: Iran's situation has been deteriorating. I'm quite sure that if she had hammered out a deal comparable to the JCPOA, Republicans would be running around yapping about how Trump would have achieved peace in the middle east by just having the stones to bomb Iran. Lol.