A proposed U.S. law would ban superintelligence and pause advanced AI

A new congressional proposal moves the AI pause debate from an open letter into criminal law. Senator Bernie Sanders and Representative Greg Casar say their Ban Artificial Superintelligence Act would permanently prohibit the development and deployment of artificial superintelligence and temporarily pause advanced AI development until a federal regulator creates binding safety rules and model review. Their announcement describes a new cabinet-level agency with an advisory board, oversight across the frontier-model lifecycle, authority to remove dangerous capabilities, international agreements, allied coordination, and export controls. It also proposes a corporate death penalty and prison terms of up to 20 years for deliberate circumvention. That severity guarantees attention, but the proposal's credibility will depend on definitions and institutional mechanics not resolved by a press release. What measurable capability separates advanced AI from prohibited superintelligence? Who tests it, with what access, and how are deceptive or distributed systems handled? Would open weights, academic research, fine-tuning, foreign services, and smaller labs be treated differently? What due process and judicial review would constrain an agency empowered to destroy systems? Supporters should publish the operative bill text, scientific criteria, enforcement model, and international strategy. Opponents should still answer the central risk claim: if systems can exceed human control across consequential domains, which legal power exists before the threshold is crossed? A ban without measurable boundaries is difficult to enforce. A capability race without a stop rule is difficult to govern.