Donald Trump has announced 100% tariffs on computer chips and semiconductors made outside the US.

The announcement came as Apple chief executive Tim Cook said his company would invest an extra $100bn (£74.9bn) in US manufacturing.

Soon, all smartwatch and iPhone glass around the world will be made in Kentucky, according to Mr Cook, speaking from the Oval Office.

"This is a significant step toward the ultimate goal of ensuring that iPhones sold in the United States of America are also made in America," said Mr Trump .

"Today's announcement is one of the largest commitments in what has become among the greatest investment booms in our nation's history."

Mr Cook also presented the president with a one-of-a-kind trophy made by Apple in the US.

Image: Trump seen through the trop

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