how did us labor unions treat chinese immigrants in the 1800s?

U.S. Labor union did not allow Chinese immigrants to become members.

Explanation:

Labor unions in the United States are organizations that are formed by workers from various industries that are recognized under "US labor law". Labor union opposed immigrants because they thought that the American workers will be undermined.  

In the 1850’s, Chinese immigrants established Chinatowns in cities mainly on the western coast of the United States as U.S. Labor union did not allow Chinese immigrants to become members. In 1882, American government passed “Chinese Exclusion Act” to stop Chinese immigrants from becoming American citizens.

shang dynasty

western zhou (ca. 1046-771 bce)

eastern zhou (ca. 771-256 bce)

whose power in the senate is equal to the power of the speaker of the house?