In the Obama era, the issue of climate change reflected the idea of an increasingly close relationship between the essence of the United States — the “pluralistic” country, built with immigration from every corner of the planet which Obama felt he reflected — and the world itself.
In the Trump era, America closes in on itself. It gives itself top priority — America First — and follows the course of a political agenda based on “domestic” convenience. The rest of the world must adapt to it. The climate is no longer among the priorities; dealing with it is not in the interest of the U.S., says Trump.
In Obama’s vision of America and the world, it is not only a melting pot of communities, religions and cultures; it’s a melting pot of 320 million Americans.
There is the enhancement of the geographical and social plurality that makes up the American puzzle, a federation where California — the sixth largest economy in the world — coexists with Texas, larger than France and richer than many nations, and with tiny Delaware, and with Idaho of potato fame, and with the states with closed and disused factories.