This is a storm in a tea pot. The accord is nothing more than a promise not to pollute. It has nothing in it that forces any limits or penalties.

In short, it wasted a lot of taxpayers money to produce a document that is signed by almost everyone and says "we be good".

Staying in it or staying out of it has no consequences for climate. US can stay, US can leave and same for everyone else. A much stronger *binding* agreement is needed whereas polluting countries are forced to diminish their activity. Our only hope is in tech that will make polluting expensive.