From the Overview: "In April 2019, the United States and Japan held their first round of negotiations toward a new bilateral trade agreement. [...] In August, President Trump and Prime Minister Abe announced they reached an agreement on 'core principles' of a trade agreement covering agricultural market access, some industrial goods tariffs, and rules on digital trade. Both sides have released few details on the exact terms, but indicate they aim to finalize and sign the deal by late September. The announced deal reportedly does not cover trade commitments on motor vehicles, a long-standing area of bilateral tension. [...] President Trump has stated he is using the threat of increased U.S. auto tariffs to influence the broader negotiations."
CRS In Focus, IF11120
Congressional Research Service: https://crsreports.congress.gov/