US AI Restrictions: Why Korea Must Pivot to Physical AI and Hardware
The U.S. Department of Commerce is expanding AI restrictions from software to physical systems, according to Shim Jae-hoon, a foreign attorney and KAIST professor. This shift forces South Korea to pivot from semiconductor “brains” to robotics “muscles”—specifically sensors and actuators—to avoid being locked out of future technological borders.
Why is the U.S. restricting AI software?
Washington is treating AI code and algorithms as strategic national security resources rather than commercial assets. According to Shim Jae-hoon, recent U.S. Department of Commerce measures restrict access to certain AI services for users outside the U.S. and even for foreign-national employees within affected companies.

This represents the most comprehensive U.S. technology control since President Franklin D. Roosevelt signed the Export Control Act in 1940. While previous restrictions targeted tangible goods like weapons and raw materials, current policies now encompass general-purpose AI models used in daily applications.
What happens when AI moves into physical hardware?
The next phase of regulation will likely target “Physical AI,” which Shim describes as the convergence of digital intelligence with robotics, drones, and autonomous vehicles. This technology allows machines to perceive and interact with the real world in real-time.
Success in this sector doesn’t depend on code alone. It requires specialized hardware, including:
- Precision Sensors: The “eyes and ears” that allow robots to navigate.
- High-performance Actuators: The components that convert energy into motion.
- Reduction Gears: Essential for the precise control of humanoid robot movements.
As the U.S. integrates these hardware components into its strategic asset list, countries relying solely on software or chip design face the risk of sudden service interruptions or export bans.
How does South Korea compare in the AI race?
South Korea currently possesses a disparity between its digital capabilities and its physical implementation. Shim frames this as a divide between “brains” and “muscles.”
| Category | Korea’s Current Strength | The Strategic Gap |
|---|---|---|
| The “Brains” | Global leadership in memory chips and advanced semiconductors. | High dependency on U.S.-led AI software frameworks. |
| The “Muscles” | Strong general manufacturing and battery technology. | Lags in core robotics components like precision actuators. |
To stay competitive, Korean firms must convert their existing leadership in batteries and semiconductors into a physical AI ecosystem. Shim argues that this is the only way to ensure Korea remains on the “correct side” of the emerging technological frontier.
Frequently Asked Questions
What is Physical AI?
Physical AI is the integration of artificial intelligence with physical hardware, such as humanoid robots or autonomous drones, enabling them to sense and manipulate their environment.

Why is the 1940 Export Control Act mentioned?
It serves as a historical precedent. According to Shim Jae-hoon, current AI restrictions are the broadest since that act, indicating that AI is now treated as a matter of national security rather than just trade.
What are the critical components for robotics leadership?
The most critical components are high-precision sensors, actuators, and reduction gears, which allow for the accurate and fluid movement of AI-driven machines.
What do you think? Will South Korea’s lead in semiconductors be enough to dominate the robotics era, or will U.S. hardware restrictions create an insurmountable wall? Share your thoughts in the comments below or subscribe to our newsletter for more deep dives into global tech geopolitics.