Immigration to the United States began to recover after the end of World War I. Refugees from the Russian Revolution, the Armenian Genocide and the collapse of the Italian economy were primarily responsible for the resurgence. However, in the United States, demobilization has led to increased competition for employment and rising unemployment. Economic concerns combined with ethnic prejudice to end America`s « open door » immigration policy in the 1920s. When the Japanese population increased in California, Japan viewed them with suspicion as a penetrating corner. Until 1905, anti-Japanese rhetoric filled the pages of the San Francisco Chronicle, and Japanese Americans lived not only in Chinatown, but throughout the city. In 1905, the Japanese and Korean Exclusion League was established and promoted four directives: Chinese Exclusion Act, Formal Immigration Act of 1882, United States. Federal law, which was the first and only major federal law that explicitly suspended immigration for a given nationality. The Basic Law on Exclusion prohibited Chinese workers – defined as skilled and unskilled workers and Chinese working in the mining industry – from entering the country. Subsequent legislative changes prevented Chinese workers who had left the United States from returning home. The passage of the law is the result of several years of racial hostility and anti-immigration agitation by white Americans, set a precedent for subsequent restrictions on immigration of other nationalities, and began a new era where the United States went from a country that welcomed almost all immigrants to a gatekeeping country. Many Japanese Americans argued with the school authority that the segregation of schools went against the 1894 treaty, which did not explicitly address education, but stated that the Japanese would gain equal rights in the United States. According to U.S.
Supreme Court review decisions (Plessy v. Ferguson, 1896), a state did not violate the equality protection clause of the U.S. Constitution by imposing racial segregation as long as the separate institutions were substantially identical. Tokyo newspapers condemned segregation as an insult to Japanese pride and honor. The Japanese government wanted to protect its reputation as a world power. Government officials realized that there was a crisis and that intervention was needed to maintain diplomatic peace.  U.S. participation in World War I fanned the flames of the anti-immigration atmosphere, despite the fact that many immigrants were rewarded in the U.S. military. This time, hostility was directed against Southern and Eastern Europeans, who masked the wave of immigration that was occurring at the same time as the conflict. The geopolitical tensions that drew the United States into the war, combined with hostile representations of our foreign enemies through political cartoons and other media representations, have increased the popularity of isolationist and nativist positions. Tensions in San Francisco had escalated, and since Japan`s decisive victory over Russia in 1905, Japan had demanded equal treatment.
The result was a series of six notes communicated between Japan and the United States from late 1907 to early 1908. .