Senator Bernie Sanders introduced legislation on Tuesday that would halt new data center construction in the United States until Congress passes binding AI safety standards, in one of the most sweeping federal interventions targeting AI infrastructure proposed to date.
The bill arrives as Washington faces growing pressure to regulate artificial intelligence development, with lawmakers on both sides of the aisle debating how aggressively the federal government should intervene. Representative Alexandria Ocasio-Cortez is expected to introduce a companion bill in the House within the coming weeks, according to Wired, suggesting a coordinated legislative push from the progressive left.
A Moratorium as Leverage
Sanders framed the moratorium explicitly as a mechanism for buying time. The senator said the pause would give lawmakers the opportunity to "ensure that AI is safe" before infrastructure expansion accelerates further. The construction freeze would apply to new data centers — the physical backbone of large-scale AI model training and deployment — effectively placing a ceiling on the industry's ability to scale until Congress acts.
The bill targets infrastructure rather than the AI models themselves, an approach that reflects a practical reality: data centers are tangible, regulated physical assets subject to federal and local permitting, making them easier to govern than software systems or algorithmic processes.
The construction freeze would apply to new data centers — the physical backbone of large-scale AI model training and deployment — effectively placing a ceiling on the industry's ability to scale.
The proposed mechanism is binding legislation rather than advisory guidance — a significant distinction from the voluntary commitments and executive orders that have characterized much of U.S. AI policy to date. A moratorium would carry legal force, with violations potentially subject to federal enforcement, though the bill's precise enforcement mechanisms have not yet been detailed in available reporting.
What the Bill Does Not Yet Specify
Critical details remain unclear from current reporting. The bill's text has not been published in full, leaving open questions about which facilities would be covered, whether existing data centers could expand, and what specific safety benchmarks Congress would need to meet before the moratorium lifts. The absence of a defined endpoint — a clear set of criteria that would trigger the freeze's removal — is a significant legislative design question that will shape whether the bill is seen as a serious policy instrument or a political signal.
The tech industry is virtually certain to oppose the measure. Major AI developers including Google, Microsoft, Amazon, and Meta have committed hundreds of billions of dollars to data center expansion in the United States, with much of that spending explicitly tied to AI workloads. A federal construction moratorium would directly threaten those investment timelines.
The Ocasio-Cortez Parallel
The expected House companion bill from Ocasio-Cortez would need to pass both chambers and survive a presidential signature or veto override to become law — a high bar under the current political configuration. Nonetheless, parallel bills in both chambers signal that progressive legislators intend to make AI infrastructure a legislative priority rather than leaving it to regulatory agencies or industry self-governance.
The strategy mirrors past progressive legislative efforts on issues like climate and financial regulation, where introducing ambitious bills — even those unlikely to pass immediately — serves to anchor the policy debate and pressure moderates toward compromise positions. Whether this bill follows that pattern or advances substantively will depend heavily on how the broader Senate approaches AI regulation in 2025.
Critics may also argue that pausing data center construction in the U.S. would not pause AI development globally, potentially disadvantaging American companies relative to counterparts in China and Europe that face no equivalent restriction.
What This Means
If passed, the Sanders bill would represent the most direct federal constraint on AI infrastructure ever enacted in the United States, forcing Congress to define what "safe AI" means in law before the industry can resume its current pace of physical expansion.