In earlier talks, Japan offered to increase imports of US agricultural goods and review its “non-tariff trade barriers” to American car sales to respond to the concerns of the Trump administration. In addition, the government is mulling to collaborate with the US to secure supply chains of rare earth magnets and semiconductors.

The companies said they had entered into an agreement with the U.S. government to alleviate any national security concerns.

After a year and a half of government talks, countless regulatory hiccups and last-minute negotiations, Nippon Steel Corp. secured its much-wanted prize late last week when President Donald Trump approved the $14.