Nippon Steel plans to invest $14 billion in U.S. Steel's operations including up to $4 billion in a new steel mill if the Trump administration green lights its bid for the iconic U.S. company, according to a document and three people familiar with the matter.

The efforts to push through Nippon Steel’s proposed takeover come as Japanese negotiators are seeking to lower a 24 per cent tariff on the country’s imports into the US introduced by the Trump administration. Japanese officials signalled their intent last week to hold out for a better agreement.

Nippon Steel is making a major investment in the United States. The Japanese steelmaker is planning to invest $14 billion in the U.S. Steel’s operations