A border surge reshaped America. Now, data shows who 4.5 million migrants were and where they went

An unprecedented surge in border crossings over the past decade reshaped America: Millions of people from more than 150 countries arrived, bringing the U.S. immigrant population to its highest levels ever.

Now, data obtained exclusively by The Associated Press paints a picture of who these migrants are, where they went, and what happened after the border.