In the late 1800s, why were union leaders opposed to immigration?

Some labor unions opposed immigration because their members believed immigrants would take jobs away from native-born americans. ... The 3 reasons are because the immigrants put them out of jobs, were invading the country, and they were racists.

Explanation:

in 1803 the louisiana purchase took place, doubling the size of the country. by 1840 almost 7 million americans had migrated westward in hopes of securing land and being prosperous. the belief that settlers were destined to expand to the west is often referred to as manifest destiny.

explanation:

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