The United States Is... Or Are?

The United States Is... Or Are?
July 3, 2009
By Ben Zimmer

Before the war, it was said "the United States are." Grammatically, it was spoken that way and thought of as a collection of independent states. And after the war, it was always "the United States is," as we say today without being self-conscious at all. And that sums up what the war accomplished. It made us an "is."