Taiwan has moved swiftly to seek clarification from Washington after the US Supreme Court struck down Donald Trump’s tariff authority. The ruling on Friday prompted the US president to invoke a separate statute – Section 122 of the US Trade Act of 1974 – to impose a 15 per cent global tariff, casting fresh uncertainty over Taiwan’s trade outlook. The legal reset has raised questions in Taipei about whether tariff exemptions negotiated under the existing Taiwan-US trade framework – including...