Japan's government is aiming to reach a package deal with the US that includes a review of auto tariffs, and will study how to win concessions from Washington.



Japan's chief tariff negotiator Akazawa Ryosei returned home on Saturday, after holding his second round talks with officials of President Donald Trump's administration.



After getting a briefing, Prime Minister Ishiba Shigeru told Akazawa and Chief Cabinet Secretary Hayashi Yoshimasa to quickly and carefully study plans ahead of the next round of talks, possibly in mid-May or later.



Japan strongly sought a review of Trump's tariffs in the latest round. US officials repeated their stance from the first round of talks that special treatment cannot be given only to Japan on steel and autos.



Still, Ishiba called the talks "constructive," saying in-depth discussions were held on issues including autos and other sector-by-sector levies.



Akazawa calls the tariffs "regrettable", and says Japan cannot agree unless all are included in a package deal.



Government sources say Japan proposed a review of its rules to make it easier to import American vehicles. It also broached expanding imports of corn and soybeans, and technical cooperation in shipbuilding.



The sources say the US side presented a list of what it identified as Japan's "non-tariff barriers."



Japanese government officials believe there is room for both sides to find common ground. They plan to study areas where the Trump administration could possibly concede ground.