and they won't be. they won't be. i was elected to represent the citizens of pittsburgh, not paris. >> he won the state of pennsylvania. did not win in pittsburgh. hillary clinton carried pittsburgh. we spoke to people in pittsburgh and other pennsylvania towns about what the president said. >> i think he might not have done his math on that. >> despite being in the rust belt, allegheny county voted blue in 2016. pittsburgh, once the heart of the steel industry, has worked to reinvent itself over the last few decades, trying to shed its smoggy past, opting for a more sustainable future. >> that's the filtration unit. >> they aim at helping the city do that. the small business retrofits trucks to be more fuel efficient. the city of pittsburgh is its biggest client. >> seeing that smog and all of the harmful emissions go away is just really beneficial for