What reasons did the american party give in the 1840s to encourage immigration reform

Answer;

The American party, also known as the Know-Nothing Party, encouraged immigration reforms to prevent the arrival to the USA of Catholic Immigrants

Other reasons they gave to encourage the reforms include;

-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.

these civilizations were located around fertile rivers, where they could produce an abundance of crops

it was on the rise and doing very well and would continue to do well until the great depression from 1929-1939