Should U.S. soldiers be forced to wear the U.N. uniform?

Well, let’s see.

Starting with Article II, section 2 of the United States Constitution:

And then there’s Article VI:

So a treaty, made by the President and duly ratified by the Senate, is part of the supreme law of the land, under the terms of the United States Constitution itself.

And then there’s President Truman’s Proclamation of United Nations Charter and Statute of the International Court of Justice

So under the U.S. Constitution, the Charter of the United Nations is part of the supreme law of the United States. How can a soldier refuse to participate in U.N. activities, when ordered by his lawful superior? The constitutional process has been followed to ensure that U.S. participation in U.N. activities is fully constitutional. A soldier who refuses to participate in these circumstances would be acting contrary to the Constitution.