It depends on which war. Parents of fighting age children have often opposed their children going off to war, because they did not want their children to be killed. But this varies by region-- some studies have shown that southern parents are generally more supportive of their children engaging in military service. However, even when parents don't want their children to fight, there are exceptions. One example was World War II, where after the U.S. was attacked at Pearl Harbor, popular sentiment changed dramatically and nearly everyone (parents as well as young people) became a proponent of going overseas and defeating Hitler and his allies.
It declared war on the USA and immediately started an extensive U-boat war on US shipping in US territorial waters.
they would oppose the US government because they believe in abolishing the government. In other words, they do not want a government.
The responsibilities of a US citizen included civic participation by voting. Also, a citizen is expected to protect American principles and values.
The Cold War
No, it couldn't be. That meant that the US was declaring war against itself!
Generally speaking, the Left-wing in the US tends to oppose participation in wars.
They wanted the united states to avoid interfering in world politics
During World War I, many naturalized American citizens had close relatives - commonly parents - who were still German citizens in Germany. Their brothers and sisters back in the "Old Country" might wind up facing American Doughboys in battle.
Britain
The American public did not approve of US participation in the war because of the country's isolationist history.
yes, US forces participated in the korean war from 1950 to 1953
No
The violent conflict between nations, or groups of nations, is antithetical to the struggle between economic classes. Workers do not benefit from territorial disputes between France and Germany, they should be directing their efforts toward getting better wages and working conditions.
It declared war on the USA and immediately started an extensive U-boat war on US shipping in US territorial waters.
They mirrored the US; protests, etc.
The Neutrality Act
draft