The report says Biden unveiled the military aid package, comprising "ammunition, artillery, armored vehicles," after his meeting with Ukrainian President Volodymyr Zelensky in Hiroshima.
The assistance package includes additional HIMARS ammunition, artillery rounds, anti-armor capabilities and vehicles, the Pentagon said.
The United States has committed $38 billion in security assistance to Ukraine by the Biden administration, including more than $37.3 billion since February 24, 2022, the statement added.
Western countries have been supplying military aid to Ukraine since the start of hostilities in February 2022. The aid evolved from artillery munitions and training in 2022 to heavier weapons, including tanks, later that year and in 2023.
The Kremlin, in turn, has repeatedly warned against continued arms deliveries to Kiev. Russian Foreign Minister Sergey Lavrov has said any cargo that contains weapons for Ukraine will become a legitimate target for Russia.
Russia has been conducting a special military operation in Ukraine since February 2022. Russian President Vladimir Putin has said the operation aims to "protect people subjected to genocide by the Kiev regime for eight years."