Why is climate change such a hard sell in the US?

President Donald Trump on June 1 took the dramatic step of removing the U.S. from the Paris climate agreement – the product of many years of diligent and difficult negotiation among 175 nations around the world. Recent polls reveal that six in 10 Americans oppose Trump’s move. However, a significant portion of climate skeptics remain – especially among Trump’s base and the Republican politicians who cheered this move.