FERC has issued a Draft EIS for two related natural gas infrastructure projects: the Mississippi Crossing Project (MSX), proposed by Tennessee Gas Pipeline Company, LLC, and the South System Expansion 4 Project (SSE4), proposed by Southern Natural Gas Company, LLC and Elba Express Company, LLC. MSX would construct approximately 208 miles of natural gas pipeline and three new compressor stations across ten counties in Mississippi and Choctaw County, Alabama. SSE4 would add 22 pipeline loops totaling approximately 291 miles and compression modifications at 14 existing stations across Mississippi, Alabama, and Georgia. The draft EIS concludes that with applicant and Commission-recommended mitigation, adverse effects would be less than significant. Comments are due by March 23, 2026.12