The gentlemen`s agreement of 1907 () was an informal agreement between the United States of America and the Empire of Japan紳協 which did not allow Japanese immigration and Japan to no longer emigrate to the United States. The aim was to ease tensions between the two Pacific states. The agreement was never ratified by the U.S. Congress and was replaced by the Immigration Act of 1924. Chinese immigration to California exploded during the 1852 gold rush, but the Japanese government practiced a policy of isolation that thwarted Japanese emigration. It was not until 1868 that the Japanese government reduced restrictions and Japanese immigration to the United States began. Anti-Chinese sentiments motivated American entrepreneurs to recruit Japanese workers.  In 1885, the first Japanese workers arrived in the then independent kingdom of Hawaii. Concessions were agreed in a note that, a year later, consisted of six points. The agreement was followed by the admission of Japanese students to public schools. The adoption of the 1907 agreement spurred the arrival of “image marriages,” women who were closed remotely by photos.  The creation of distant marital ties allowed women who wanted to emigrate to the United States to obtain a passport, and Japanese workers in America were able to earn a partner of their own nationality.
 As a result of this provision, which helped to reduce the gender gap in the Community, from a ratio of 7 men per woman in 1910 to less than 2 to 1 in 1920, japan`s population continued to grow despite the immigration restrictions imposed by the agreement. The gentlemen`s agreement was never enshrined in a law passed by the U.S. Congress, but it was an informal agreement between the United States and Japan, which was implemented by unilateral action by President Roosevelt. It was repealed by the Immigration Act of 1924, which prohibits all Asians from immigrating to the United States.  The increase in Japanese immigration, in part to replace excluded Chinese agricultural workers, has met with concerted opposition in California. To appease Californians and avoid an open break with Japan`s emerging world power, President Theodore Roosevelt negotiated the diplomatic agreement in which the Japanese government took on the responsibility of drastically limiting Japanese immigration, especially that of workers, so that Japanese children could continue to attend integrated schools on the West Coast. However, family migration could continue, as Japanese men, with sufficient savings, could bring wives through arranged marriages (“pictured wives”), their parents and minor children. As a result, the Japanese-American population was more gender-friendly than other Asian-American communities, and continued to grow through natural increases, which led to increased pressure to end immigration and further reduce residents` rights. Many Americans argued with the school board that the separation of schools was contrary to the 1894 treaty, which did not explicitly address education, but indicated that the Japanese would obtain equal rights in America. According to the U.S.
Supreme Court review decisions (Plessy v. Ferguson, 1896), a state did not violate the equality clause of the U.S. Constitution by imposing racial segregation as long as the various institutions are essentially equal. Tokyo newspapers have denounced segregation as an insult to Japanese pride and honour. The Japanese government wanted to protect its reputation as a world power. Government officials became aware of the crisis and intervention was needed to maintain diplomatic peace.  Japan was prepared to restrict immigration to the United States, but was seriously injured by San Francisco`s discriminatory law, which specifically targeted its people.