Answer:
The American party, also known as the Know-Nothing Party, encouraged immigration reforms to prevent the arrival to the USA of Catholic Immigrants.
Among the reasons they gave to encourage immigration reform were the following:
-Immigrants were stealing jobs from "true
Americans"
-Catholic church opposed taxation to give
funds to public schools. -Catholics were loyal to the Pope, instead of
being loyal to the USA. -Most of the immigrants were poor peasants who caused the crime rates to grow.