U.S. President Donald Trump, first lady Melania Trump, Japanese Prime Minister Shinzo Abe and wife Akie Abe watch the Summer Grand Sumo Tournament at Ryogoku Kokigikan Sumo Hall in Tokyo, Japan May 26, 2019. U.S. President Donald Trump, on a four-day visit to Japan, spent what he said was "an incredible evening" watching the Japanese national sport of sumo on Sunday. REUTERS/Jonathan Ernst

U.S. President Donald Trump, first lady Melania Trump, Japanese Prime Minister Shinzo Abe and wife Akie Abe watch the Summer Grand Sumo Tournament at Ryogoku Kokigikan Sumo Hall in Tokyo, Japan May 26, 2019. REUTERS/Jonathan Ernst

U.S. President Donald Trump, first lady Melania Trump, Japanese Prime Minister Shinzo Abe and wife Akie Abe watch the Summer Grand Sumo Tournament at Ryogoku Kokigikan Sumo Hall in Tokyo, Japan May 26, 2019. REUTERS/Jonathan Ernst

U.S. President Donald Trump, first lady Melania Trump, Japanese Prime Minister Shinzo Abe and wife Akie Abe watch the Summer Grand Sumo Tournament at Ryogoku Kokigikan Sumo Hall in Tokyo, Japan May 26, 2019. REUTERS/Jonathan Ernst

U.S. President Donald Trump prepares to present the President's Cup to wrestler Asanoyama, the winner of the Summer Grand Sumo Tournament at Ryogoku Kokigikan Sumo Hall in Tokyo, Japan May 26, 2019. REUTERS/Jonathan Ernst

U.S. President Donald Trump and Japanese Prime Minister Shinzo Abe attend the Summer Grand Sumo Tournament at Ryogoku Kokigikan Sumo Hall in Tokyo, Japan May 26, 2019. REUTERS/Jonathan Ernst