US Senators Urged Protection of Silicon Carbide Production
A bipartisan group calls for a whole-of-government response to counter rapid Chinese market growth.
Updated on Oct. 3, 2026 in Semiconductors
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US senators have requested that the Trump administration act to bolster domestic silicon carbide manufacturing. The effort comes amid concerns that reliance on adversary supply chains threatens critical infrastructure.
Why it matters
Silicon carbide is a foundational material for 5G, electric grids, and defense systems. The senators argue that domestic production risks obsolescence if left to compete against current international market dynamics.
Chinese producers expanded their global silicon carbide wafer market share from under 5% to nearly 50% between 2021 and 2026. This growth occurred under the national priorities established by the Made in China 2025 initiative.
The players
United States Senate
The upper chamber of the US Congress responsible for legislative oversight and advising on national security policy.
Trump administration
The current executive branch of the federal government managing trade policy and national defense priorities.
The details
Silicon carbide is a semiconductor compound used for its high thermal conductivity and efficiency in power electronics. Its properties make it essential for operating hardware in extreme conditions, including advanced weapons systems, AI data centers, and automotive technology. Senators are proposing the use of the Defense Production Act, which grants the executive branch power to direct industrial output, alongside new critical minerals designations and Buy America requirements to secure the supply chain.
Timeline
Between 2021 and 2026, Chinese global market share for silicon carbide wafers expanded from 5% to nearly 50%.
On October 1, 2026, a group of US senators formally sent a letter to the Defense and Commerce Secretaries.
The Tech Race
The senators' letter serves as a direct legislative response to the supply chain objectives prioritized under the Made in China 2025 initiative. This move highlights a broader strategic competition to control the manufacturing of materials critical to next-generation power electronics.
Potential shifts in industrial policy could impact the cost and availability of components used in automotive technology, 5G infrastructure, and power grids. Residents should monitor federal procurement updates, as future policy changes may prioritize domestic sourcing for critical defense and utility systems.
The takeaway
The move signals a heightened focus on hardware sovereignty for materials used in critical infrastructure. Readers should watch for potential executive branch actions or new legislative mandates following the October 1, 2026, letter.
Further reading
For more on the national security implications of chip manufacturing, see our latest coverage on Semiconductors.
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Should the U.S. government prioritize domestic production of critical materials over relying on global supply chains?
