others have looked in the past particularly at some papers by jenny hunt looking at the gap between college-educated native us citizens and foreign-born for other activities and self-employment and a great deal of the difference can be explained in their fields of study. people with engineering degrees are more likely to become self-employed and become business owners and in addition those who are foreign-born are more likely to take degrees, it only makes sense the foreign-born, to become business owners or self-employed. a fairly large residual that we have not explained. some of the discussion specifically looking at students who came here to study and graduate, a way to do a startup company, in my research i was interested to look and see whether we find differences among foreign-born degrees, there is prior evidence suggesting in the us, do contribute more than those abroad as opposed to those who were trained abroad to be commercialized. a lot of high-tech firms, foreign-born founders and us trained, there is a downside, and say let's have as many students as possible, and to be entrepreneurs,