President Trump has made his decision to withdraw from the Paris climate accord, according to two sources with direct knowledge of the decision. Details on how the withdrawal will be executed are being worked out by a small team including EPA Administrator Scott Pruitt.
They're deciding on whether to initiate a full, formal withdrawal — which could take 3 years — or exit the underlying United Nations climate change treaty, which would be faster but more extreme.
Why this matters: Pulling out of Paris is the biggest thing Trump could do to unravel Obama's climate legacy.
It sends a combative signal to the rest of the world that America doesn't prioritize climate change; or worse, does not believe it to be truthful, and threatens to unravel the ambition of the entire deal.
The other outliers: The only other two countries that aren't supporting the deal are Nicaragua and Syria.
How it happened: A letter from 22 Republican Senators (including Mitch McConnell) that called for a clean exit had reinforced Trump's instincts to withdraw, and the president had been telling confidants over the past week that he was going to pull out.
The inclusion of EPA Administrator Scott Pruitt is an ominous sign. Word circulating from others inside EPA is that Pruitt found irrefutable proof that the temperature data used to bolster the allegations of "global warming" and of "climate change" were deliberately skewed "estimates" and not factual scientific data.
If this is the basis for the US withdrawal, then not only will the Paris Climate Accord likely fall apart, anything else having to do with "climate change" and "global warming" will likely come undone as well. The rest of the world would not continue along a path which has, as its basis, phony data designed to achieve a specific political result.