The Jewish population represented a detrimental part to society. See, the Jews were blamed for the loss of World War 1. Germany was severely embarrassed about all the land in Africa they had to give back and money they had to give. The Jews were a marker to starving and angered Nazi and German population.
The Congress´s power implied through the "necessary and proper clause", also known as the "elastic clause" is to pass any legislation relating to the "express powers" granted though the Constitution. Alexander Hamilton was the main supporter of this interpretation.
The unforseen attack on Pearl Harbor...(which led to WWII)
The answer is The increased opposition to war.
Nixon was not popular with his foreign policy of war to fight communists. During his term, people held numerous strikes that showed that the people were against its implementation. They don't want numerous soldiers to get involved and suffer. They also don't want people from foreign lands to lose their lives because of this.