What impact did U. S. involvement have on America and Americans overall?

Explanation:

The American Expeditionary Forces arrived in Europe in 1917 and helped turn the tide in favor of Britain and France, leading to an Allied victory over Germany and Austria in November 1918. By the time of the armistice, more than four million Americans had served in the armed forces and 116,708 had lost their lives.

the constitution of the united states gave congress the absolute authority over immigration laws

thomas jefferson is the answer