Abstract
AbstractWho supports trade in the US Congress? We uncover the ideological space of trade voting, focusing on trade agreements and development policy as two fundamental cleavages around globalization. We then cluster members of Congress into coherent voting blocs, and identify the most pro-trade voting blocs in each Chamber. We find that these blocs: cross party lines; are ideologically heterogeneous; and are over-represented on the committees with jurisdiction over trade. We then examine two leading theories of Congressional voting – on constituency characteristics and campaign contributions – and find support for each using our learned voting blocs. Members of pro-trade blocs have defended their constituents’ and contributors’ interests by speaking out to confront the Trump administration’s protectionism. We conclude that unsupervised learning methods provide a valuable tool for exploring the multifaceted and dynamic divisions which characterize current debates over global economic integration.
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