If Donald Trump wins the presidency for a second term, one of the very first things he should do when he enters office is again kill US participation in the Paris Agreement on climate change. Only this time, he should do it the right way. Trump should assert that Paris is indeed a treaty, just as the United Nations Framework Convention on Climate Change (UNFCCC) specifies and all other nations treat it, and so send it to the Senate where, like any other treaty, it needs 2/3 of the Senate supporting it for it to be ratified in the US.