New submitter angel115 points out this article on the widespread fraud committed in India against many thousands of those seeking visas to work in the U.S.
Many Indian techies rely on the services of visa brokers (or people who claim to be), and end up burned by the transaction. From the article: "Some are lucky enough to get a visa — only to find that the promised job in the US doesn’t materialize. Then the visa holders are forced to return to India after spending thousands of dollars just surviving. ... No official figures are available for the number of frauds in India, but an unclassified document released by Wikileaks showed that in 2009, US consular officials cited H-1B scams as one of the two most common fraud categories in India."
Another interesting detail: As part of a U.S. government investigation, "Officers investigated 150 companies in the city and discovered that 77 percent 'turned out to be fraudulent or highly suspect.' ... Officials uncovered a scheme where Hyderabadis were claiming to work for made-up companies in Pune so the Mumbai consulate would be less suspicious about their applications. 'The Hyderabadis claimed that they had opened shell companies in Bangalore because "everyone knows Hyderabad has fraud and Bangalore is reputable,” according to the internal communiqué [later published by Wikileaks]."