Using the 2003 National Survey of College Graduates, I examine how immigrants perform relative to natives in activities likely to increase U.S. productivity, according to the type of visa on which they first entered the United States. Immigrants who first entered on a student/trainee visa or a...

What explains the world-wide trend of pro-entrepreneurial policies? We study entrepreneurial policy in a lobbying model taking into account the conflict of interest between entrepreneurs and incumbents. It is shown that international market integration leads to more pro-entrepreneurial policies....

Do legal institutions governing financial contracts affect the nature of real investments in the economy? We develop a simple model and provide evidence that the answer to this question is yes. We consider a levered firm's choice of investment between innovative and conservative technologies, on...

We study how complementarities and intellectual property rights affect the management of knowledge workers. The main results relay when a firm will wish to sue workers that leave with innovative ideas, and the effects of complementary assets on wages and on worker initiative. We argue that firms...

R&D incentives of new entrants to a market may be shaped by the prospects of being acquired by an incumbent. In this paper, we analyze a two-stage innovation game between one incumbent and a large number of entrants. In the first stage, firms compete to develop innovations of high quality. They...

We develop a theory of innovation for entry and sale into oligopoly, and show that an invention of higher quality is more likely to be sold (or licensed) to an incumbent due to strategic product market effects on the sales price. Preemptive acquisitions by incumbents are shown to stimulate the...

We develop a model of endogenous lobby formation in which wealth inequality and political accountability undermine entry and financial development. Incumbents seek a low level of effective investor protection to prevent potential entrants from raising capital. They succeed because they can...