TSMC expansion risks into US
@Just Do It：
The semiconductor industry is driven by supply and demand, and technology is a key factor that differentiates companies within the industry. Margins for these companies can fluctuate significantly due to competition and cyclicality. Taiwan Semiconductor $Taiwan Semiconductor Manufacturing(TSM)$ (TSMC) has consistently remained profitable, even as other companies in the industry see declining margins. TSMC is considered especially valuable because it produces over 90% of the world's most advanced chips. This has led to tension between China and the US over control of TSMC, and has also attracted the attention of investor Warren Buffett, whose company Berkshire Hathaway recently acquired a stake in TSMC. Apple, in which Buffett owns a lar