Among the work visas for the U.S. the H-1B visa is a much in-demand and also very tough to obtain visa. On a yearly basis, just 20,000 advanced degree H-1B visas and 65,000 general H-1B visas are available. According to recent reports, the foreign citizens who are hired actually impact the U.S. workforce in a positive way.
During the period between the years 1990 to 2010, a study involving an analysis of income data and immigration in a total of 219 metropolitan cities showed the greatest inflow of workers of foreign origin. They usually come to join the workforce of the country as STEM professionals- working in the areas of science, technology, engineering as well as mathematics. There was also a hike in wages for native-origin and college-educated workers.
According to most researchers and economists, the influx of more immigrants into the country, who are highly-skilled, would enable the U.S. economy to receive a boost and would also create jobs to enhance productivity and innovation. An increase in the H-1B visa applications not only makes it easy for highly-skilled overseas professionals to enter the country but also gives them an opportunity to set-up their own business establishments, creating more employment inadvertently.
This is proved by the fact that out of 25.3% engineering and technology companies established between the years 1995 to 2005, at least one had been founded by an immigrant. Also, in the Silicon Valley, 43.9% of such enterprises had an immigrant co-founder between 2005 and 2012. The more the number of firms establishing in the U.S. the more will be the chances of additional job opportunities and innovation which immigrants are capable of doing very well.