The passage of the Immigration Act of 1965 continued to favor northern Europeans but allowed small increases for U. S. allies. continued to favor northern Europeans but allowed small increases for U. S. allies. was a compromise with nativists and led to few gains for Latino and Asian migrants. was a compromise with nativists and led to few gains for Latino and Asian migrants. led to a tightening of immigration standards to stop Communist infiltration. led to a tightening of immigration standards to stop Communist infiltration. eased restrictions on immigration by ending the previous quota system.

- eased restrictions on immigration by ending the previous quota system.

Explanation:

'Immigration Act of 1965' terminated the previously existing formula of National Origins/ the quota system that discriminated the immigrants on the basis of their race. The law brought in by Johnson allowed the Eastern, Westerns, as well as, Southern Europeans to receive equal treatment regardless of their race or their country of origin. The key reason behind the decision was that the majority of American immigrants were originated/born in either Canada or Europe. Thus, this law mitigated the limitations levied on the immigration.