Foreign Giants' Broad Shoulders: The Causal Effect of Foreign Ideas on U.S. Innovation -- by Tarek Alexander Hassan, Aakash Kalyani, Juan Cruz Lopez Del Valle

We thank Daron Acemoglu, Nick Bloom, Marcela Carvalho, Kevin Lang, Josh Lerner, Ezra Oberfield, Pascual Restrepo, Alireza Tahbaz-Salehi, Ahmed Tahoun, and Chris Tonetti, aswell as seminar participants at Harvard Business School and the Federal Reserve Bank of St. Louis, for helpful comments. The views expressed here are solely those of the authors and do not necessarily represent those of the Federal Reserve Bank of St. Louis or the Federal Reserve System, or the National Bureau of Economic Research.