US-China Export Controls: The Choke Point Equilibrium

Key Takeaways

• US controls ~90% of semiconductor equipment, China dominates rare earths
• 2022‑2026 export controls erased $1.5 trillion market value in two days
• MATCH Act proposes nationwide bans on chipmaking tools, 150‑day ally deadline
• Truce expires Nov 2026; next escalation likely as both sides protect choke points
• China’s extraterritorial licensing targets rare‑earth products made abroad with Chinese inputs

Pulse Analysis

The export‑control tug‑of‑war between Washington and Beijing has crystallized around two critical supply‑chain choke points. America’s leverage lies in the upstream layers of the semiconductor ecosystem—design software, lithography machines, and AI model architectures—where it commands roughly 90 percent of the global equipment market. China, by contrast, wields power downstream, controlling 85‑90 percent of rare‑earth processing and the raw materials essential for batteries, magnets, and advanced optics. This asymmetry forces each side to weaponize interdependence, using tariffs, entity‑list expansions, and licensing regimes to squeeze the other without triggering self‑inflicted damage.

Since the 2022 BIS rules that barred advanced computing chips, a cascade of reciprocal measures has intensified. The United States added a 25 percent Section 232 tariff on advanced semiconductors in early 2026 and tightened case‑by‑case reviews for flagship GPUs. China responded with export bans on gallium, germanium, antimony and a sweeping extraterritorial licensing scheme for rare‑earth products made abroad with Chinese inputs. The rapid escalation erased over $1.5 trillion in equity market value within two days, prompting a temporary truce at the Busan summit. That pause, however, is set to lapse in November 2026, leaving the market poised for another shock cycle.

Legislative action now points to a more entrenched split. The MATCH Act, cleared by the House Foreign Affairs Committee in April 2026, proposes nationwide prohibitions on key chipmaking tools and a 150‑day deadline for allied coordination with the Netherlands and Japan. By closing servicing loopholes that have allowed Chinese fabs to run older Western equipment, the bill aims to cement the bifurcation of technology ecosystems. Companies must therefore reassess supply‑chain resilience, diversify component sources, and monitor policy developments closely, as the next round of controls could reshape investment flows and competitive dynamics across the global tech sector.