Ted Hesson in The Atlantic:
But immigration, on the whole, bolsters the workforce and adds to the nation’s overall economic activity. Look at the impact on cities that attract the most foreign-born residents. New York, Los Angeles, Chicago, and Houston are all major immigrant destinations and also economic powerhouses, accounting for roughly one-fifth of the country’s gross domestic product.
This article is about a year old, but the data points it contains are good to remember as political rhetoric ramps up over the next couple of months.