https://www.whitehouse.gov/briefing-room/statements-releases/2021/01/20/paris-climate-agreement/

Of course, the best news today was the inauguration of President Biden. But as an added bonus, he has brought the US back into the Paris Climate Agreement with this simple acceptance of the Treaty. Since the Paris Agreement is largely binding, at least with respect to the substantive emission reduction commitments, and given that the US was only out for a little more than 2 months, it’s as if the US never left!

Now, for students of international environmental law, the next question to ask would be this: how can this simple “acceptance” of the Agreement make the US a party? Why is Senate advice and consent not necessary?