"The net migration flow from Mexico to the United States has stopped and may have reversed, " says the report, which is based on an analysis of U.S. and Mexican government data by the nonpartisan Pew Hispanic Center.

WSJ: Mexican Immigration Wave Winds Down

To some degree this flow has replaced the traditional migration of young Italians from south to north.

ECONOMIST: The world comes to Italy

He looked at the flow of goods, services, FDI, migration and information (using telephone calls as a proxy).

ECONOMIST: Schumpeter

"The time has come to reduce the causes of migration and turn this into a legal, orderly and secure flow of workers and visitors, " he said.

BBC: Felipe Calderon addresses US Congress

California ranks as the third worst state in the country in terms of job migration with a net outflow of jobs that is one percentage point greater than the flow of jobs into the state.

FORBES: Broken California: Wasting Money and Hurting Business