1. TSMC faces labor shortages and rising costs at its Arizona chip plant, delaying production and increasing expenses; 2. The company imported Taiwanese technicians to bypass U.S. workforce gaps, sparking union negotiations; 3. The project highlights challenges in U.S. semiconductor reshoring efforts amid delayed subsidies and geopolitical tensions.

1. TSMC's Arizona plant faces labor shortages and worker protests over harsh conditions and safety concerns; 2. Union disputes and construction delays prompt TSMC to consider importing technicians from Taiwan; 3. Rising costs and operational challenges jeopardize U.S. semiconductor supply chain goals.