Many studies have compared wages and employment in areas with many immigrants to wages and employment in areas with few.

ECONOMIST: Workers of the world | The

The Mexican constitution denies equal employment rights to immigrants, even legal ones, in the public sector.

CENTERFORSECURITYPOLICY: Mexico��s Glass House

There is an annual limit of 140, 000 green cards for employment-based immigrants, so the ceiling means that while immigrants from small countries like Belgium and Guinea have a good chance, the waiting list for citizens of populous countries like China and India can last for decades.

WSJ: Crovitz: The Economics of Immigration