mexican diaspora was accelerated by US policies Dingley Tariff of 1897 which raised tax on imported sugar, exapanding cultivation of sugar beets in the south and Midwest, increasing demand for migrant workers companies recruited and transported large number of Mexicans Texas growers encouraged this heavy migration of Mexicans, knowing that the development of the area depended on Mexican Labor recently arrived Mexicans outnumbered the older Texas Mexican residents cotton was the main cash crop and the pull factor that attracted Mexicans until the late 1920s, after which spinach and other vegetables acquired a greater share of the market