During World War I, the United States declaration of war on Germany (1917) came after Nicholas II had abdicated as a result of the February Revolution. When the Tsar was still in power, some Americans resisted fighting a war with him as an ally.
In 1917, the U.S. entered World War I by declaring war on Germany, following Nicholas II's abdication due to the February Revolution. At that time, many Americans were against collaborating with the Tsar, who was still in power.