xAI and the Future of Executive Enforcement Discretion

Elon Musk was once the poster child for the environmentalism and techno-accelerationism that defined 2010s corporate culture. In his Time Person of the Year interview in 2021, Musk remarks, “I admire anyone who is making a positive contribution to humanity, whether that is in entertainment or technology.” [1]  Like many tech CEOs, he has since outlived that vision, embracing artificial intelligence (AI) with the express approval of the federal government, where he once held a vital—and deeply controversial—role. Today, the growing power of American government-corporate syncretism, the future being built by the first American trillionaire and his peers, is currently testing its limits in a federal courthouse in Mississippi.

When xAI opened the second Colossus data center in Southhaven, Mississippi this year, the NAACP and the Southern Environmental Law Center filed a civil suit against it. The suit alleged that xAI had installed and operated dozens of natural gas turbines without the permits required under the Clean Air Act (CAA), potentially exposing Southaven's predominantly Black communities with 1,700 tons of nitrogen oxides (NOx), 180 tons of particulate matter, 500 tons of carbon monoxide, and 19 tons of formeldahyde yearly. [2] 

These chemicals pose an incredible public health threat in Southhaven, with formaldehyde especially given its known carcinogenic effects; however, these chemicals were not the CAA’s original focus: the lead and SOx of the industrial economy were much more pressing. Despite this, each chemical falls under the CAA’s jurisdiction, and its prerogative to reduce all pollution to the lowest level possible still applies. The NAACP’s lawsuit was followed by a class-action suit brought by Southhaven residents due to the constant noise pollution emitted by the data center. [3]

Though data centers are opening throughout the country to similar or even greater resistance, Southhaven is distinctive for the intervention of political pressure from above: In a memorandum issued by Associate Attorney General Stanley Woodard Jr. The Department of Justice moved to intervene and dismiss the case under Rule 41, a stipulation of the Federal Rules of Civil Procedure which states that an action may be dismissed at the plaintiff's request only by court order, on terms that the court considers proper. [4] 

The DOJ’s use of “proper” hinges on the alleged fact that xAI and Grok were indispensable to American national security, particularly with respect to the Iran war and economic leadership in AI, which superseded the demands of environmental security established by the CAA and the state-level legislation it authorizes, including emission limits and mandatory permits for new construction. [5]

In NAACP vs xAI, the defendant is violating the CAA and should therefore be subject to injunctive relief, including the closure of the Colossus facility until it complies with federal environmental law, as well as restitution for the harms imposed on the Southaven community. Furthermore, though the DOJ’s motion rests on a plausible interpretation of Rule 41, the use of the rule to curtail citizen suits is inconsistent with the fundamental purposes of the CAA, and the Supreme Court's longstanding recognition of citizen enforcement as a central component of the Act's regulatory framework. If the DOJ’s motion is accepted, the Department's position would threaten the future of citizen suits as a mechanism for holding corporations accountable for violations of environmental law. What is “proper” according to economics or political ideology in this case runs counter not only to what is just, but also what is right. 

In 1970, Congress passed the CAA to combat dangerous levels of smog in large cities produced by garbage incinerators, coal and oil power plants, and factories. [6] Fifty-six years later, the American economy—and its principal sources of pollution—have changed. Data centers now consume 5-6% of American electricity generation, while the emissions associated with powering them are estimated to impose roughly $25 billion in annual damages. [7]

The CAA establishes a system of cooperative federalism in which the federal government sets national air quality standards while states implement them through State Implementation Plans (SIPs). Cooperative federalism rests on the idea that government works best when state and federal governments overlap: when the Environmental Protections Agency (EPA) establishes a new national ambient air quality standard (or NAAQS), states submit their plans to reach and maintain the new standard in a customized SIP. [8] The success of initiatives like these requires a degree of ideological coherence within and between states, as well as coordination with the federal government.
The Mississippi SIP for the CAA requires corporations to file permits for the construction of stationary sources of pollutants and comply with the strict emission limits. [9] Colossus 2, however, never obtained the permits required under the Act, despite operating natural gas turbines whose emissions far exceed regulatory thresholds. The facility also sits within walking distance of six public schools.

The history of the original Colossus facility further suggests that these alleged violations were not an isolated oversight. During the construction of Colossus 1, xAI alleged that only fifteen natural gas turbines were operating, while aerial imagery later indicated that approximately thirty-five were in use. Though xAI argued that permits were unnecessary for temporary turbines, this position was soon undermined by the release of the New Source Performance Standard by the EPA on January 9th, which states that permits are required even for temporary construction. [10] In light of xAI’s misrepresentations and infringements, The NAACP filed a suit against xAI on April 14th.

In its response to the lawsuit, the DOJ did not dispute that xAI violated the CAA. The argument is predicated on two statutory provisions: first, the CAA grants the United States an unconditional right to intervene in citizen suits at any time; second, Federal Rule of Civil Procedure 41(a)(1) permits a plaintiff, which the United States effectively becomes upon intervening, to voluntarily dismiss an action before the defendant has served an answer or a motion for summary judgment. [11]; [12]; [13]

Within environmental law, citizen suits are among the most powerful mechanisms for enforcing statutory obligations when the DOJ is either unable or unwilling to prosecute. They empower private organizations, such as the NAACP, to act as watchdogs by bringing enforcement actions against alleged violators of federal law. If the government ever intervenes in citizen suits via Rule 41, it is usually to continue the lawsuit via a more centralized approach. 

In Gwaltney v. Chesapeake Bay Found, the SCOTUS considered citizen suits filed under the Clean Water Act (1972): an important companion statute to the CAA. Though Chesapeake Bay Foundry argued for dismissal on the basis that they had already ceased all violations, Justice Marshall determined that a citizen suit only required a good-faith allegation of an ongoing or intermittent violation (the latter in Gwaltney), and thus the suit deserved to be heard in court. [14]

In this case, the government has invoked a rule intended to facilitate citizen enforcement in order to frustrate Congress’s design for the CAA; rather than enforcing the statute as written, it has sought to terminate a citizen suit altogether, effectively declining to enforce a law with which it disagrees while simultaneously preventing private parties from doing so.

It is easy to imagine how establishing this precedent could backfire in the near future, such as in a case where a private organization ideologically close to the administration had a citizen suit shut down by a new, unsympathetic iteration of the DOJ. Regardless, it conflicts fundamentally with the separation of power principles of Youngstown Sheet & Tube Co. v. Sawyer and Tennessee Valley Authority v. Hill, which each describe the limits of political resistance to established legislation.
In 1952, the prospect of a nationwide steel workers’ strike during the Korean War compelled President Truman to issue Executive Order 10340 in an attempt to seize control of U.S. steel mills. [15] The order did not cite previous judicial precedent, but instead cast a wide net of presidential powers and national security concerns to claim its authority. Writing for the Court, Justice Hugo Black rejected that reasoning, holding that the President could not exercise lawmaking authority that the Constitution assigns to Congress. Even in the face of a national emergency, the Executive may not disregard or rewrite statutes enacted by the legislative branch. [16]

Youngstown bears directly on NAACP v. xAI in three respects. First, both cases concern an assertion of executive power that conflicts with Congress's chosen statutory framework. Second, each tests whether a perceived threat to national security can justify executive action that effectively nullifies congressional policy choices. Third, each implicates the separation of powers by asking whether the Executive may accomplish indirectly what Congress has declined to authorize directly. The answer to the third question, importantly, is no: one of the Youngstown’s most cited passages comes from Justice Robert Jackson’s concurrence: “When the President takes measures incompatible with the expressed or implied will of Congress, his power is at its lowest ebb.” This stands in contrast to the maximum power of action with the sanction of Congress, or the “zone of twilight” of action without the express approval or disapproval of the legislative branch. [17]

Tennessee Valley Authority v. Hill is similarly compelling, involving the clash of political and economic interest versus environmental law. At the cusp of the completion of the Tellico Dam, a citizen suit was brought by Hill on the basis of the Endangered Species Act, given that the dam’s site was the threatened species’ critical habitat. Congressional outrage stemmed from the enormous federal investment in the project and the fact that Tellico predated the ESA. Still, the verdict put out by the Supreme Court went against the political pressure coming from legislators and cited the superimportance of the ESA. [18]

Beyond the use of Rule 41, the DOJ’s actions in NAACP v. xAI raise the normative question of whether an administration’s interests should take precedence over adherence to established case law. Both Youngstown v. Sawyer and TVA v. Hill point to the fact that they should not be: one, because national security interests do not override the lawmaking power of Congress, and two, because the law deserves enforcement, even when doing so is contrary to economic progress.

Opposition to the construction of nearby data centers has become a surprising point of bipartisan consensus among voters. According to the polling center Heatmap, 43 percent of people would have supported the construction of a data center near them and 42 percent disagreed in August of 2025. Now, only 21 percent support the proposition whereas 71 percent are against it. [19] The greater question posed by these statistics is whether this consensus among constituents will result in changes to federal policy, or rather if some parts of America will have to have a recognized hazard to their communities for the sake of progress: with the strength of the executive to smother their attempts at resistance if necessary.

The case of xAI v. NAACP is a sign of the widening scope of the executive branch: the addition of jurisdiction over citizen suits to its implied powers, alongside the expansion of what kind of entities it can shelter and intervene on behalf of. If the DOJ’s motion is granted, AI companies have the power to ignore environmental protection laws, and the political efficacy of citizen suits is greatly weakened. Civil rights and environmental laws, because their very nature requires limits and sacrifice, are written so they cannot be ignored because of their inconvenience. For the sake of interests ranging from American environmental health to national security, it is imperative that the government not use the courts to quell legislation they find economically inconvenient or uncomfortable, and instead choose to work alongside its constituents to enforce the law and make America a safer, healthier place for all.

Edited by Ava DiGiuseppe

Sources

[1] Tien Le and Vanessa Romo, “Elon Musk Is Time’s 2021 Person of the Year.” Business. NPR, December 13, 2021. https://www.npr.org/2021/12/13/1063792887/elon-musk-time-person-of-the-year.

[2] “Illegal Pollution from Data Center Power Plants Shouldn’t Harm Our Communities. We’re Suing xAI.” Earthjustice, n.d. Accessed August 1, 2026. https://earthjustice.org/case/xai-illegal-gas-power-plant-data-center-colossus.

[3] “xAI Lawsuit Filed Over Southaven MS Data Center Noise Pollution.” Weitz & Luxenberg, n.d. Accessed July 28, 2026. https://www.weitzlux.com/firm-news/xai-lawsuit-southaven-ms-data-center-noise-pollution/.

[4] Fed. R. Civ. P. 41(a)(1)(A)(i)

[5] 11 Pt. 2 Ch. 2 Miss. Code R. 2.1 D (2013)

[6] US EPA, OA. “EPA History: The Clean Air Act of 1970.” Overviews and Factsheets. https://www.epa.gov/archive/epa/aboutepa/epa-history-clean-air-act-1970.html.

[7] Nicholas Z. Muller, "Measuring the Impact of Data Centers in the United States Economy: Monetary Damage from Air Pollution and Greenhouse Gas Emissions," NBER Working Paper 35100 (2026), https://doi.org/10.3386/w35100

[8] US EPA, OAR. “Basics of SIP Requirements.” Overviews and Factsheets. February 3, 2016. https://www.epa.gov/ground-level-ozone-pollution/basics-sip-requirements.

[9] 11 Pt. 2 Ch. 2 Miss. Code R. 2.1 D (2013)

[10] Amendments to the General Provisions of Part 62 for Incorporation by Reference of Clean Air Act 111(d) and 129 State Plans

[11] 42 U.S.C. § 7604(c)(2)

[12] Fed. R. Civ. P. 41(a)(1)

[13] Memorandum in Support of the United States’ Motion for Intervention and Dismissal, NAACP and NAACP Mississippi State Conference v. X.AI and MZX Tech LLC, No. 3:26-cv-00074-DMB-JMV (N.D. Miss. June 15, 2026)

[14] Gwaltney v. Chesapeake Bay Found., 484 U.S. 49 (1987)

[15] Exec. Order No. 10340, 3 C.F.R. 861 (1949–1953 Comp.)

[16] Youngstown Sheet & Tube Co. v. Sawyer, 343 U.S. 579 (1952)

[17] Youngstown Sheet & Tube Co. v. Sawyer, 343 U.S. 579 (1952) (Jackson, J., Concurring)

[18] Tennessee Valley Auth. v. Hill, 437 U.S. 153 (1978)

[19] “Exclusive: Americans Now Overwhelmingly Oppose New Data Centers Near Them - Heatmap News.” https://heatmap.news/politics/americans-oppose-data-centers-poll.