Whether or not we protect the earth should not be a Left v. Right issue. Whether or not our government is "of, by and for the people" should not be a Left v. Right issue. An amoral corporatism is neither Left nor Right but an antiAmerican, undemocratic assault on our foundations,

So we shouldn’t comply with the Paris Accords just in case someone else doesn’t?

No. We are the one who left the Paris Climate Agreement.