Please stop spreading this. It is just not true. Yes, plenty of employers hire foreigners for less money than they would pay a domestic worker, but in almost all cases those are illegal, undocumented workers. A work visa requires a review and certification by the department of labor to establish what the appropriate wages are in the place of employment. The process requires an ad being posted in major newspapers in the area and documentation showing that no citizen or permanent resident qualified. The work visa expires in 1 to 3 years and can be renewed exactly once, for 1 to 3 years. The renewal process requires an audit. Also, as a work-visa employee, your view of "the conditions back home" are mistaken. There are many reasons why somebody would work abroad, and escaping the backwaters for the promised land of America is more cliche than anything else. That being said, I am sure there are those who abuse the system. Like any system. But don't generalize. It's a lie, and a harmful one.
To each his/her own, it takes all kinds, and all that...
Florida is the fourth most populous state in the US. It's also very uniquely shaped and easy to spot on the map. Not knowing where Florida is would be like an American not knowing where Italy is.
Really? São Paulo is the most populous state in Brazil. It's so uniquely shaped that its shape is used as tile pattern. Not knowing where São Paulo is is like a Brazilian not knowing where Mexico is. Can you spot São Paulo on a map of South America? Let's face it, it doesn't matter where you go, most people are just more interested in their own backyards than any place in another continent - be it Florida or Italy.
"More software projects have gone awry for lack of calendar time than for all other causes combined." -- Fred Brooks, Jr., _The Mythical Man Month_