 Japanese American members of the United States Senate have included Daniel K. Inouye, Samuel I. Hayakawa, Spark Matsunaga, and Mazie Hirono.In 2010, Inouye was sworn in as President Pro Tempore making him the highest-ranking Asian-American politician in American history.George Ariyoshi served as the Governor of Hawaiʻi from 1974 to 1986.