Question

Select the factors that caused immigration limits to be enforced:

the threat of cheap labor to American workers
harm to American unity in war times
the Ku Klux Klan
an increase in crime and disease

Answer 1

All four. Each was used (or contributed) as a justification for restricting immigration:
- Fear of cheap immigrant labor undercutting American workers’ wages.
- Worries about loyalty and national unity during wartime (e.g., WWI/Red Scare).
- Nativist groups like the Ku Klux Klan pushed anti-immigrant sentiment and pressure for limits.
- Fears that immigrants brought crime and disease were commonly cited to support restrictions.