TSMC is on a slippery slope. Taiwan Semiconductor Manufacturing , the world's largest chipmaker, on Monday pledged $100 billion in fresh funds to build factories in the United States. It also committed to set up a major research and development centre stateside,

When TSMC's upcoming factories in Arizona will deploy the company's most cutting-edge chip tech remains a major question, despite the extra $100 billion investment in the US.

Taiwanese chip-making giant TSMC plans to invest a whopping $100 billion in the United States, after US President Donald Trump threatened to slap tariffs on overseas-made chips. It follows Trump's accusations that Taiwan stole the US chip industry and his threats to impose tariffs of up to 100 percent -- and Taipei's promises to invest more in the United States.