Residents of Northwest Indiana, many of whom are Black and Latino, live in one of the most polluted regions in America, suffering from poor health outcomes and low life expectancies. The Biden administration has promised that it will bring the radical change necessary to end the pollution that plagues America’s industrial cities. Politico Pro Energy reporter Annie Snider and E&E News reporter Sean Reilly spent months reporting on the plight of Americans forced to endure these living conditions. Today, Sean explains the challenges of the cumulative impact approach — the so-called “holy grail” — that the Biden administration is trying to implement to help ensure environmental justice is served.