Out of 45 million U.S. arrivals by air and sea whose tourist or business visas expired in fiscal 2015, the agency estimates that about 416,500 people were still in the country this year.
Patterns of global migration and remittances have shifted in recent decades, even as both the number of immigrants and the amount of money they send home have grown, according to a new Pew Research Center analysis of data from the United Nations and the World Bank.