MARY LOUISE KELLY, HOST:
Ford, GM and 15 other automakers have written to President Trump calling on him and the state of California to reopen talks about pollution standards. Such talks broke down months ago. The carmakers say they are willing to cut emissions from cars over time, which would be good for business and the environment. All right, well, to dig in on this dispute, we have NPR's Camila Domonoske in the studio. Hi, Camila.
CAMILA DOMONOSKE, BYLINE: Hi.
KELLY: What exactly is this dispute?