CPER - Trump reverses Biden-era pollution rules on U.S. copper smelters October, 27 2025 09:43 AM United States Copper Index Fund ETV 2025-10-27 09:43:45 ET More on Freeport-McMoRan Freeport-McMoRan: Still Relying On Its Volatile Indonesian Operations Freeport-McMoRan: Too Much Uncertainty After Grasberg Incident Freeport-McMoRan: The Copper Market Should Soften In The Back Half Of The Year For further details see: Trump reverses Biden-era pollution rules on U.S. copper smelters