When politicians sign up for such agreements they don’t do so for a feeling of concern for the environment. They do so to get those pesky activists off their butts, signal virtue, and hope that they might be in a very different position when push comes to shove. They are happy to throw the entire country to the dogs if only their career path and income are not impeded in any way. They will lie, steal and cheat as much as they possibly can to get what they want, not what’s good for the country. Such agreements should only be validly signed for the term the signing politician was voted in for.
What is the point of President Biden rejoining the Paris Accord, when even the French cannot be bothered to keep their pledges?