[LatteLazy]

If it were a treaty, you would be correct. But Paris is just an accord. Its totally non binding and has no real commitments.

The US just needs to:

* make a plan (doesn't need to make sense or work or have details),

* measure some things (you define what you measure so again, pretty easy).

* the accord prevents anyone critising or questioning your plan or measurements. So it's 100% mark your own work and I won't check.

It's nice that Biden has put the US back in, but he can do so exactly because it won't make any difference to anyone's lives.

And that's the real problem. The world needed a binding climate agreement and it needed it in 2000. Here we are 21 years later and we still can't manage a non binding, "you do you", placeholder...