PNAS 2023, with Ruixue Jia , Margaret Roberts , and Eddie Yang Download the manuscript here This paper documents how U.S.–China political tensions have reshaped scientific production in the United States. We study NIH-initiated investigations that began in 2018 and targeted undisclosed foreign funding, with most cases involving China. Using large-scale publication data from 2010–2021, we compare U.S. life scientists who had collaborated with researchers in China to similar s

Electoral Studies, 2021 , with Stan Wong Download the manuscript here This paper examines how a major anti-regime protest—the 2014 Umbrella Movement in Hong Kong—shaped electoral outcomes in the city. Using fine-grained constituency-level election data, we show that citizens living closer to the protest sites were more likely to shift away from the pro-democracy opposition in the subsequent legislative election. A one–standard deviation decrease in distance to the protest sit