From 1900 to 1945, America went from the top of the world, to the bottom, and back up again. The high of the imperialist dream replaced by the lows of the Great Depression, and the rise to a world super power following World War II. America may have shined throughout history as the light of democracy and liberty in the world, however, that does not give us the right to assert our economic, cultural, or political influence on the world, nor serve as a global pseudo police force. It is morally wrong to force control over a nation that wishes to be independent from the U.S.; and when becoming involved in other nation's internal conflicts, we create an unfair advantage to the side we assist, and a major disadvantage to the one we go against. This greatly impacts the future of the nation than if we did not get involved, and it is much more fair if we let a nation resolve it's own conflicts by itself, and this involvement creates much unneeded resent and enemies. However, it is warranted for America to become involved with international conflict if, and only if, it actually impacts us as well, or has the potential to do so. Unless another nation's conflicts directly affect us however, it is not warranted for the U.S. to impose any influence over other nations, nor serve as an international pseudo police force. .
First off, we should know more than anyone what it's like to be controlled by another nation while possessing a strong thirst for independence and freedom. Much like how the British controlled America in the early years of our prospering nation, we attempted to control political and economic control over Cuba in the late 1800s and early 1900s. We had very recently assisted them in the fight to receive independence from the control of Spain, and we had promised them that once winning the war they would achieve independence in due time. However, once Cuba became free of Spanish control, we attempted to impose control over the nation, and after much fighting and protest from the Cuban citizens, we eventually gave the Cubans their promised and much overdue independence.