Abstract
The “protection-for-sale” motive introduced by Grossman and Helpman (Am Econ Rev 84: 833–850, 1994) has been adopted widely in the literature, but only a few papers test the theory empirically. To provide empirical evidence for the protection-for-sale theory, we proceed in three steps. First, we argue that among all existing theories, only the mechanism in the protection-for-sale theory depends on the government’s political strength. Second, we develop a theoretical model to rationalize the connection between political strength and import tariffs. Our extended protection-for-sale model predicts that a government with greater political power generally imposes higher tariffs. Third, we propose that political strength can be proxied by the share of legislative seats held by the governing party or coalition. We test the model prediction using panel data covering 95 product categories and 105 countries, from 1996 to 2014. Our estimates provide support the protection-for-sale theory. The estimated effects of political strength on tariffs are larger in small and democratic countries.
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Notes
Social welfare is modeled for the purposes of consistency with Grossman and Helpman (1994).
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Acknowledgements
We thank Eric Bond, Thomas Zylkin, Devashish Mitra, and seminar participants at the Southern Economics Association conference (2019) for helpful comments and discussion. We also thank Editor William F. Shughart II, Editor Peter Leeson, and an anonymous referee for insightful comments and suggestions. All remaining errors are ours.
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Appendices
Appendix A: Proofs
1.1 Proof of Proposition 1
Proposition 1
Equilibrium tariffs are increasing in political strength.
Proof
To simplify the notation, we define \(\Omega \left({\uptau }_{\mathrm{i}}\right)={\Pi }_{\mathrm{i}}\left({\uptau }_{-\mathrm{i}},{\uptau }_{\mathrm{i}}\right)+\mathrm{aW}\left({\uptau }_{-\mathrm{i}},{\uptau }_{\mathrm{i}}\right)\).
Equation (4) is simplified to
which gives
From the implicit function theorem, Eq. (10) leads to
The first term, denoted by (*), can be reduced as follows:
where the last line is from Eq. (11). Thus, we can conclude that the derivative in the first term denoted by (*) must be positive.
In addition, because \(\rho \left(\theta ,{\tau }_{i}\right)\Omega \left({\tau }_{i}\right)\) is strictly concave in \({\tau }_{i}\), its second derivative, \(\frac{{\partial }^{2}}{\partial {\tau }_{i}^{2}}\left(\rho \left(\theta ,{\tau }_{i}\right)\Omega \left({\tau }_{i}\right)\right)=\frac{\partial }{\partial {\tau }_{i}}\left[\frac{\partial \left(\rho \left(\theta ,{\tau }_{i}\right)\right)}{\partial {\tau }_{i}}\Omega \left({\tau }_{i}\right)+\rho \left(\theta ,{\tau }_{i}\right)\frac{\partial \Omega \left({\tau }_{i}\right)}{\partial {\tau }_{i}}\right]\), must be negative. Thus, the second term, denoted by (**), is negative.
Therefore, Eq. (12) concludes that
\(\square\)
1.2 Proof of Corollary 1
Corollary 1
Political contributions are increasing in political strength.
Proof
To simplify the notation, we define \(\Omega \left({\uptau }_{\mathrm{i}}\right)={\Pi }_{\mathrm{i}}\left({{\varvec{\uptau}}}_{-\mathrm{i}},{\uptau }_{\mathrm{i}}\right)+\mathrm{aW}\left({{\varvec{\uptau}}}_{-\mathrm{i}},{\uptau }_{\mathrm{i}}\right)\).
According to the Nash bargaining problem, political contribution in sector \({\text{i}}\) is equal to
The derivative of \({\mathrm{c}}_{\mathrm{i}}\) with respect to political strength \(\uptheta\) is
where the last simplification uses the condition in Eq. (11). Therefore, political contributions are increasing in political strength.\(\square\)
Appendix B: empirical analysis
2.1 List of countries
Albania, Algeria, Angola, Argentina, Australia, Austria, Bahrain, Bangladesh, Belarus, Belgium, Bolivia, Botswana, Brazil, Brunei, Burundi, C. Verde Is., Cambodia, Cameroon, Canada, Cent. Af. Rep. Chad, Chile, Colombia, Congo, Costa Rica, Cote d’Ivoire, Cyprus, Czech Rep., Denmark, Djibouti Dom. Rep., Ecuador, Egypt, El Salvador Eq., Guinea, Estonia, FRG/Germany, Finland, France, Gabon, Greece, Guatemala, Guinea, Guinea-Bissau, Honduras, Hungary, India, Indonesia, Ireland, Israel, Italy, Japan, Jordan, Kenya, Kuwait, Latvia, Lebanon, Lesotho, Lithuania, Luxembourg, Madagascar, Malawi, Malaysia, Maldives, Mali, Malta, Mauritius, Mongolia, Morocco, Mozambique, Myanmar, Namibia, Nepal, Netherlands, New Zealand, Nicaragua, Niger, Nigeria, Norway, Oman, Pakistan, Panama, Paraguay, Peru, Philippines, Poland, Portugal, Qatar, Romania, Russia, S. Africa, Saudi Arabia, Senegal, Sierra, Leone, Slovakia, Slovenia, Spain, Sri Lanka, St. Lucia, Swaziland, Sweden, Switzerland, Togo, Turkey, UAE, UK, Uganda, Uruguay, Venezuela, Vietnam, Zambia, Zimbabwe.
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Jonelis, A., Suwanprasert, W. Protection for sale: evidence from around the world. Public Choice 191, 237–267 (2022). https://doi.org/10.1007/s11127-022-00964-8
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DOI: https://doi.org/10.1007/s11127-022-00964-8