Immigrant founders have been critical to the entrepreneurial ecosystem, accounting for roughly 20% of all venture capital-backed founders over the past 30 years. We document the channels through which immigrant founders arrive in the United States and how those channels have changed over time. Higher education has served as the primary entry channel for immigrant founders. The share of foreign-educated immigrant founders who initially arrive for work has decreased over time, while the share of immigrant founders with undergraduate education in the United States has increased over time. Immigrant founders are likely to start their companies in the state in which they were educated, leading to potentially large local economic benefits associated with attracting foreign students. The results of this paper have important policy implications for the supply of entrepreneurial talent and efforts to promote entrepreneurial ecosystems.

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