The conclusion that the act supports is that the American Government wanted very few immigrants compared to the previous decades, and that they wanted the majority of those immigrants to come from northern European countries like Germany, Great Britain, and Scandinavia.
As we can see, Italy does not even show in the list, and it had been one of the largest soucers of immigration in the previous decades. The government not only wanted restrict all immigration, but specially immigration from southern Europe and from Asia.
They were the most ruthless and radical political groups that created fear during the Reign of Terror. Fear how? From democratic initiatives to public violence.
President Wilson’s approach towards the defeated Central Powers after World War I was to not punish them too harshly, since he knew this would only cause dangerous resentment. He did not get his wish, however.