Democrat Pittsburgh Mayor Bill Peduto answers a journalist's questions at his office in Pittsburgh, Pennsylvania, on June 2, 2017. As the people of Pittsburgh hustled to work on Friday, most everyone had heard the news: to their alarm, Donald Trump had highlighted their revitalized Rust Belt city as he walked out of a global climate pact.Peduto said he believes Trump was likely imagining "Pittsburgh maybe 40 years ago, Pittsburgh when it was still a global center for steel production and manufacturing. But that era ended in the 1970s." / AFP PHOTO / Eric BARADAT / TO GO WITH AFP STORY by Ivan COURONNE (Photo credit should read ERIC BARADAT/AFP/Getty Images)
