It was claimed in the Bulletin of the Asiaic Exclusion League, November, 1912, that Japanese owned and controlled fertile land in California equal to a strip five miles wide the entire length of the State.  It also predicted that within ten years, at the then current rate of increase, the Japanese would be in absolute possession of the entire agricultural resources of the State of California.

Such a strip of land, measuring some thousand miles by five miles, would come to 2,496,000 acres or 8% of all land in California under cultivation.  At the zenith of their prosperity, the Japanese of California owned only 74,769 acres and leased 383,287 acres, which, together, represent only 1.5% of all the farm land in the State.

In the Gentlemen's Agreement of 1907, Japan voluntarily restricted immigration to the U.S. of non-laboring classes.  That same year, the ratio of female Japanese immigrants to male Japanese immigrants to the U.S. was about 1:10.  By 1910, the number of  female Japanese  women to male Japanese immigrants had switched dramatically to more than 2:1.  The birthrate of Japanese in America shot up from 155 in 1908 to 3,721 by 1916.  By 1921, the birthrate was 3,330 nationally, of which 2,220 were in California.  This same year, Japan stopped issuing passports  to picture brides.  In 1935, the birthrate of Japanese in California had dropped to 1,502.