During 1907, 1.25 million people were processed on Ellis Island
Traditionally, immigrants had tended to come from northern and western europe-WASPS (white anglo saxon protestants)
Between 1900 and 1914, 13 million arrived, mainly from southern and eastern europe
People started feeling angry towards these 'new' immigrants because:
They were often poor
many were illiterate and could not speak english
many were roman catholics or jews, therefore from a different cultural and religious background
the fear of communism spread following the Bolshevik Revolution in 1917 and the trauma of ww1, worried many Americans and contributed to the red scare in 1919
US congress passed laws to restrict immigrants and each law was more severe than the previous one