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US AI Policy Update: CHATBOT Act Approved, DOE Launches Genesis Initiative, California SB 503 Advances

Fenwick & West LLP USA
Overview
September 2026 saw significant U.S. AI policy developments, including Senate Commerce Committee approval of the CHATBOT Act to protect teen accounts and ban targeted ads. The Department of Energy (DOE) launched the ‘Genesis Open Models Initiative’ to develop open-weight foundational models for the scientific community. The White House also released a National Security Science and Technology Strategy emphasizing U.S. leadership in emerging technologies including AI. Concurrently, California’s SB 503, mandating bias risk identification and mitigation for AI clinical decision support systems, is progressing.
In Depth

Key Findings

In September 2026, the United States witnessed several significant advancements in AI policy. The Senate Commerce, Science, and Transportation Committee approved the ‘CHATBOT Act,’ primarily aimed at protecting chatbot accounts for teenagers and prohibiting targeted advertising to them. Concurrently, the U.S. Department of Energy (DOE) initiated the ‘Genesis Open Models Initiative’ to develop open-weight foundational models for the scientific community. Furthermore, the White House unveiled a National Security Science and Technology Strategy, underscoring U.S. global leadership in emerging technologies, including AI. At the state level, California’s SB 503, which mandates developers and deployers to identify and mitigate bias risks in AI clinical decision support systems, has advanced.

Technical / Clinical Details

The ‘CHATBOT Act’ focuses specifically on protecting privacy and safety for minors interacting with AI chatbots. It is expected to introduce strict regulations concerning the type of data collected by chatbots, its usage, and advertising directed at minors. The DOE’s ‘Genesis Open Models Initiative’ aims to accelerate scientific progress by supporting the development of transparent, open-source AI models applicable in fields such as computational chemistry, materials science, and biology. California’s SB 503 promotes the ethical use of AI in healthcare, mandating rigorous testing and validation from the development stage to ensure that AI-generated clinical decision support does not contain biases based on race, gender, socioeconomic status, or other protected characteristics.

Background & Context

These policy developments reflect the U.S.’s response to both the potential benefits and risks that rapid AI technological advancements pose to society. The government is striving to strike a balance between fostering innovation and safeguarding national security, privacy, and fairness for its citizens. The strategic importance of AI for national security is clearly articulated in the White House’s strategy, highlighting how technology development contributes to national defense and economic superiority. The increased regulation of AI in healthcare stems from the critical need to eliminate biases that could lead to misdiagnoses or inequitable treatments as AI becomes more integrated into patient care.

Strategic Significance & Outlook

These federal and state-level AI policy advancements are expected to significantly influence the future direction of AI development. Companies, particularly those developing consumer-facing AI products and medical AI systems, will face heightened demands for regulatory compliance. The DOE’s open models initiative is likely to enhance collaboration in AI research across public and academic sectors, promoting the dissemination of transparent and reproducible AI models. Overall, the U.S. is steadily building its legal and policy frameworks to balance AI innovation with responsible use, which will also serve as an important reference point in global AI governance discussions.

Source: https://a16zpolicy.substack.com/p/icymi-ai-policy-september-update

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