Well, the Spanish-speaking miners interpreted the white-mens fear as the jealous of the white men. California policy makers made policies such that aliens became ineligible to citizenship.
The native Anglo-American citizens of California wanted to thrive economically although the presence of other minority races and citizen of other nationalities obscured their pursuit for it. Legislatures then sought to benefit economically by charging all foreign miners a monthly 20$ license fee. The tax, being an unbearable burden, Mexicans would not manage. Consequently, of all the 15,000 miners who were in the region then, 10,000 of them chose to leave by1850 (Rawls, 1983, p. 141). The lesser number of miners left behind could not make a much contribution to the treasury as the one before. The significant effect that their exit had on caused on Californias revenue forced legislator to ease the tax burden. In 1852 there was a policy which was engineered in such a way to make sure that aliens were ineligible to citizenship (Rawls, 1983, p. 147). It was particularly targeted at ridding Chinese off California who had become so resilient against the previous tax enforcements. The policy was closely tied to economic benefits by seeking a 50$ head tax on every immigrant.