A study recently published by the National Foundation for American Policy highlights the pressing need for reform in investment and entrepreneur visa categories.  Immigrants have started nearly half of the country’s top 50 venture funded companies, and are a pervasive presence in key management and product development positions.  The companies analyzed are all privately held and have received venture capital financing in the past three years, key indicators for future success.  According to the study, of the top 50 companies, 23 had at least one immigrant founder, and 37 employed at least one immigrant in a key management or product development role.  Not surprisingly, the country providing the most entrepreneurs for such high-potential companies is India, followed by Israel, Canada, Iran and New Zealand.