Federal lawyers asked a judge Monday to dismiss the NAACP's Clean Air Act suit against Elon Musk's AI company xAI over 57 turbines in Southaven, Mississippi, that power the Grok chatbot used in U.S. strikes on Iran.
Federal lawyers on Monday urged a federal judge to dismiss a private Clean Air Act lawsuit against Elon Musk's AI company xAI, arguing that 57 unpermitted gas turbines powering the company's Memphis-area data center must keep running because the military needs xAI's Grok chatbot for live combat operations. The legal posture, if accepted, would insulate a single private company from basic environmental law based on its own claimed role in warfare.
The NAACP and the Southern Environmental Law Center sued xAI and its subsidiary MZX Tech in April, alleging the company had been operating 27 gas turbines in Southaven, Mississippi, without the air permits required by the Clean Air Act. By mid-May, the plaintiffs said in a June 12 court filing, the count had grown to 57 turbines, with two more planned, all still unpermitted. The turbines are part of what xAI calls the Colossus Gas Plant, built to supply power to the adjacent Colossus 2 data center, both just across the state line from Memphis, Tennessee.
The federal government's filing in the case, NAACP v. xAI and MZX Tech, does not dispute that the pollution is occurring or that Southaven residents have reported health concerns and noise complaints. Lawyers for the Department of Justice argued the suit should be thrown out because the Mississippi Department of Environmental Quality has determined the turbines do not require air permits, a state-level decision the NAACP is contesting, and because shutting the turbines down would compromise what the filing calls a critical military AI capability.
The government's most concrete national-security claim rests on a declaration by Cameron Stanley, the chief digital and artificial intelligence officer of the Department of War, the name used in the filing for the entity conventionally known as the Department of Defense. Stanley's declaration describes a system in which xAI's Grok Gov Model, a military-focused variant of the Grok chatbot, is paired with the Pentagon's Maven Smart System, an AI targeting platform. According to the filing, the combination was used in Operation Epic Fury, the codename used in the document for recent U.S. strikes on Iran, and helped deliver "2,000 munitions on 2,000 targets in 96 hours."
DOJ's motion rests on two main prongs. The first is procedural: that the Mississippi state permitting decision should be the end of the inquiry. The second is national security: that the suit, by threatening Colossus 2's operations, would impair a military AI capability the Pentagon relies on for live targeting. The two prongs are framed as complementary, with the national-security rationale positioned as the reason a federal court should decline to second-guess the state agency.
Attorneys for the NAACP reject both. In a written response, the Southern Environmental Law Center, which is representing the civil rights group, said the government's motion never disputes that the pollution is unlawful and harmful to residents of Memphis and North Mississippi. The argument, SELC said, is that this does not matter. The plaintiffs contend that the Clean Air Act's citizen-suit provision exists precisely to let private parties enforce the law when state regulators decline to, and that a company's procurement contracts with the Pentagon do not rewrite that statute.
The case now sits before a federal judge who must decide whether the question is narrow, focused on whether the Mississippi permit determination is reviewable in federal court, or expanded, asking whether a company's documented role in military AI can defeat a citizen suit at the threshold. The plaintiffs' June 12 filing asked the court to deny the motion and allow discovery to proceed. A ruling is expected later this summer.
The turbine count remains in motion. The NAACP's June 12 filing, which the DOJ motion does not contest on the numbers, says xAI and MZX Tech are continuing to expand the Colossus Gas Plant. If the judge allows the case to move forward, the next round of filings will likely turn on whether the court credits the government's framing of Grok as a battlefield system, or treats the military claim as irrelevant to whether a Southaven facility needs a Clean Air Act permit.