The United States was neutral from the start of the war until April of 1917.
Ragen was
neutral
The u.s. DID get involved.
The US was neutral despite Britain begging the US to enter the war until Dec 1941 when the Japanese attacked Pearl Harbor.
1917
yes they were
No
yes
World War 2
There were 116,000 US casualties. 4,744,000 were involved.
The United States became involved in the World War II about March 1941.
The US contributed some 16 million personnel to the Second World War. I'd say that would indicate they did get involved.