A recent CESIfo study looked at the role of immigrants in driving entrepreneurship.
Per authors: "Immigrants are widely perceived as being highly entrepreneurial and important for economic growth and innovation. This is reflected in immigration policies and many developed countries have created special visas and entry requirements in an attempt to attract immigrant entrepreneurs. Not surprisingly, a large body of research on immigrant entrepreneurship has developed over the years."
Couple of interesting statistical summaries:
Key conclusions are: "Overall, much of the existing research points towards positive net contributions by immigrant entrepreneurs. The emerging literature on these contributions as measured by innovations represents the most convincing evidence so far."
Interestingly, distribution of entrepreneurship across educational categories, as exemplified above, is rather uniform, although this does not adjust for quality of entrepreneurship.
Caveats are: "First, there is little evidence in the literature on how much immigrant-owned businesses contribute to job growth. Although data exists on employment among immigrant-owned businesses no data are available showing the dynamics of employment among these firms."
Second, "...immigrant business owners are more likely to export, but we know little about how much they export in total dollars and how many jobs are created by these expanded markets for selling goods and services."
Lastly, there is indeterminacy as to the "....the contribution of immigrant businesses to diversity. Although the contribution of immigrant firms to diverse restaurants, merchandise and services is apparent in any visit to a major U.S. city, we know less about the contribution to diversity in manufacturing and design of innovative products."