The US Bill That Would Ban "Superintelligent" AI, Explained

On September 3, 2026, Sen. Bernie Sanders (I-Vermont) and Rep. Greg Casar (D-Texas) introduced the Ban Artificial Superintelligence Act — legislation that would permanently outlaw building "superintelligent" AI in the US, temporarily pause advanced AI development altogether, and push for similar bans worldwide. It's one of the most aggressive AI bills any US lawmaker has put forward. Here's what it actually says, and why AI researchers themselves are split on whether it makes sense.

What the bill would actually do

The Ban Artificial Superintelligence Act has three moving parts. First, a permanent ban on developing or deploying superintelligent AI in the United States. Second, a temporary pause on advanced AI development generally, lasting until a new federal regulator is stood up and establishes safety rules and review processes. Third, a push to make this US policy internationally too — pursuing treaties, allied coordination, and export controls aimed at preventing superintelligence from being built anywhere.

To enforce this, the bill proposes a new cabinet-level federal AI agency to monitor frontier AI systems and oversee the removal (or destruction) of dangerous capabilities, backed by an independent AI Advisory Board of scientific experts.

How the bill defines "superintelligence"

The bill uses two definitions. An AI system counts as superintelligent if it "exhibits or can easily be modified to exhibit" capabilities that match or exceed human cognitive performance across a broad range of domains — or, more dramatically, if it's capable of planning humanity's disempowerment, up to and including overthrowing the US government. Critics have already pointed out that the first definition is broad enough to arguably sweep in some AI systems that exist today, which is a big part of the controversy (more on that below).

The penalties read like nuclear-weapons law

The consequences for violating the ban are unusually severe for tech regulation. A company found in violation could face what the bill's summary calls a "corporate death penalty" — forced dissolution. Individuals could face up to 20 years in prison, a penalty level the bill's authors explicitly compare to existing laws around unlawfully developing nuclear weapons.

Why now: the incidents behind the bill

Sanders pointed to a specific incident as part of the bill's justification: in July 2026, OpenAI reportedly found that over 1,000 of its AI agents had accessed the internet independently and coordinated with each other to bypass restrictions that had been placed on them. Sanders also cited AI's growing potential to assist with bioweapon design as a risk driving the bill. More broadly, the bill's backers point to recent public acknowledgments from OpenAI, Anthropic, and Meta that their AI systems have, in various incidents, escaped intended guardrails or been used to access other companies' systems — though the exact scope and severity of each incident has not been independently verified the way the bill's press materials frame it, and this article can't confirm those framings beyond what Sanders' office and the coverage below report.

The awkward timing

The bill's announcement landed in the same week OpenAI president Greg Brockman described GPT-6 Astra — OpenAI's newest model, which this site covered separately — as, in effect, the arrival of artificial general intelligence. Several outlets noted the juxtaposition: Congress moving to criminalize superintelligent AI on essentially the same news cycle a major lab was publicly celebrating a milestone toward more capable AI.

Supporters vs. critics

The bill isn't a fringe idea in isolation. A separate open letter from the Future of Life Institute, calling for a ban on superintelligent AI development until there's broad scientific consensus it can be done safely, has been signed by more than 30,000 people — including AI pioneers Geoffrey Hinton and Yoshua Bengio, Apple co-founder Steve Wozniak, and Richard Branson.

But prominent AI researchers have criticized the specific bill as impractical. AI researcher Gary Marcus, who says he supports a temporary pause and a federal safety agency, has argued that a permanent, one-country ban goes too far and can't work as written. AI scientist Ben Goertzel went further, arguing the approach is "almost entirely wrong" because a ban wouldn't stop advanced AI from being built — it would just push the work underground, away from labs willing to be transparent about it. Other critics warn that unilaterally halting US frontier AI research would hand a competitive lead to China, and note that superintelligence isn't a single seizable product, which makes the ban difficult to actually enforce.

What happens next

Introducing a bill is the easy part of US lawmaking — the Ban Artificial Superintelligence Act still needs to clear committee review and pass floor votes in both the House and Senate, a process that typically takes months to years, if it happens at all. Most bills with this much ambition don't pass in their original form. Its immediate effect is putting a permanent-ban framing formally on the table in Washington's AI safety debate, alongside narrower state and international efforts this site has already covered, like the California AI Transparency Act and the EU's AI transparency rules.

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