1. Border Patrol

    Mexican Immigration Rate Plummets

    NOGALES, AZ - DECEMBER 10:  Hundreds of people wait to pass from Mexico into the United States at the border crossing on December 10, 2010 at Nogales, Arizona. Despite Arizona's tough immigration enforcement laws, thousands of Mexican citizens have permits to work in the U.S. and commute daily from their homes across the border in Mexico. Border crossings, known as "ports of entry," are run by the U.S. Office of Field Operations,  which is part of the department of U.S. Customs and Border Protection. Port personnel are the face at the border for most visitors and cargo entering the United States and are authorized to stop, question, search and examine everyone entering the country.   (Photo by John Moore/Getty Images)

    John Moore / Getty Images

    Immigration to the U.S. from Mexico has virtually stopped, the Pew Research Center says in a new study released Monday. Citing data from Mexican and U.S. government sources, the study says that a weakened American economy, fewer employment opportunities, and stricter immigration enforcement have combined to keep many would-be migrants south of the border. The numbers have been on the decline for years—1 million immigrants were caught trying to cross the border in 2005, but six years later that number had dropped to 286,000. Constituting the largest influx of immigrants from a single country that the United States has ever seen, about 12 million Mexicans came to the country over the past 40 years.

    Read it at Pew Research Center