This interactive map shows where the 79 million people who have immigrated to the US from 1820 to 2013 came from. In the past, incoming residents from Canada, Italy, Germany, and Ireland were prevalent, but more recently Mexico, China, and the Philippines have led the way.
What I think is particularly interesting about immigration to the U.S. is that each “wave” coming in from a particular country has a story behind it — usually escaping persecution (e.g. Jews escaping Russia after the May Laws were enacted, the Cuban Revolution) or major economic troubles (e.g. the Irish Potato Famine, the collapse of southern Italy after the Italian Unification).
There are plenty of dark spots on United States’ history, but the role it has played as a sanctuary for troubled people across the world is a history I feel very proud to be a part of.
The graph of incoming immigrants as a percentage of the total US population is especially instructive. Though higher than it was in the 60s and 70s, relative immigration rates are still far below what the country saw in the 1920s and before.