Japan's $550 billion investment package agreed in this week's U.S. tariff deal could help finance a Taiwanese firm building semiconductor plants in the U.S., Japan's top trade negotiator Ryosei Akazawa said on Saturday.

Japan's government said on Friday that profits from a $550 billion investment package agreed in this week's tariff deal with the U.S. would be split between Japan and the U.S. according to the degree of contributions by each side.

The trade deal that US President Donald Trump celebrated as the largest in history becomes the more puzzling the more layers are peeled back. The centerpiece is Tokyo’s pledge to set up a $550 billion US investment fund and the lack of detail is raising questions about the viability of an agreement that’s been floated as a potential template for other major trading partners.

Trade partners with the U.S. could lower tariff rates set to kick in next week by striking deals similar to the one made with Japan, President Donald Trump told reporters Thursday. Speaking at the construction site for the Federal Reserve headquarters currently under renovation,