Based on this document, why did many white Americans support the Chinese exclusion act? Document B:Nast Cartoon

Most of the white Americans were supportive of the Chinese exclusion act. The reason behind this was that they feared that the Chinese immigrants will take their jobs and lower the wages. The basis for such thinking of the white Americans was that the Chinese were coming form a very poor country. They were willing to work the same amount of hours for lower wages and they were satisfied with that. The fear was somewhat justified, as the Americans were fighting for quite some time with the owners of the companies, and if the Chinese entered the labor market it was all going to be for nothing because the company owners would of course prefer workers that would do the same job for lesser amount of money.