<ul><li>TSMC, the world's biggest chip maker, could potentially face a $1 billion fine for allegedly breaking export rules.</li><li>The fine is expected to be a settlement following a US Department of Commerce investigation into TSMC's involvement with Huawei.</li><li>TSMC had notified the US that a Huawei product contained a TSMC chip, leading to the investigation and potential fine.</li><li>The fine could be in the form of a 'charging letter' that would give TSMC an opportunity to respond.</li></ul>

TSMC might have to fork over $1 billion to the US for allegedly breaking export rules after one of its chips was found in a Huawei processor

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