Congress is trying to reform the nation's immigration laws, but with more than 11 million undocumented immigrants now in the United States, there are deep differences on approach.
The United States remains a magnet for those fleeing turmoil and persecution and others simply seeking a better life. Robust immigration guarantees the continuation of a dynamic, ever-changing American society - but not all immigrants arrive legally.
What draws people from across the globe to U.S. shores? How are immigrants received once they arrive? How have U.S.laws and regulations governing immigration changed since September 11, 2001? VOA looks at those issues and more.