The journey towards regulation and exclusion began in California. In the 1840s, California attracted thousands of Americans, Europeans, Chinese, and South Americans. A movement inspired by economic insecurity, racial hostility, and political opportunism aimed to end Chinese immigration and force the Chinese to re-emigrate. ‘Regulation and exclusion’ looks at how this initial impetus for regulation started the evolution of American immigration law and policy. Growing racial consciousness rose among the white majority, resulting in the 1891 Immigration Act, which was an unambiguous statement of centralized power. Behind the various actions of this period was the desire for greater racial homogeneity, seen as the key to cultural homogeneity and national progress.