Economics
The Political Economy of Trade Policy and Protectionism
Quick fact
Although most economists endorse free trade, the United States' Smoot-Hawley tariff of 1930 raised average tariffs to over 40%, and many economists believe it worsened the Great Depression; yet similar protectionist pressures persist today.
Why this is interesting
If free trade makes everyone richer, why do governments keep erecting trade barriers that economists say are harmful?
Read the full explanation
Understanding The Political Economy of Trade Policy and Protectionism
Imagine a large group of consumers and a small group of producers. Free trade might lower the price of steel, helping millions of buyers a little, but hurting a few steelmakers a lot. The steelmakers, facing bankruptcy, have strong reason to lobby for a tariff. Consumers, on the other hand, each lose only a few dollars, so they don't organize. Politicians, needing votes and campaign funds, respond to the loud, organized voices. This is a classic collective action problem: the costs of protection are spread thinly over many, while the benefits are concentrated in few. So, governments often choose tariffs, even though total losses exceed total gains.
A deeper explanation
The mechanism is rooted in public choice theory: politicians maximize votes and contributions, not abstract welfare. Interest groups that are geographically concentrated, like auto plants in Michigan, can be pivotal in elections, so politicians cater to them. Tariffs protect jobs and profits in those districts, while the costs—higher prices, fewer jobs elsewhere—are national and diffuse. Additionally, protection can be a form of rent-seeking, where businesses invest resources to secure political favours rather than innovate. The persistence of protectionism, despite its inefficiency, is explained by this asymmetry in political incentives. This is why industries in decline often receive ‘temporary’ relief that becomes permanent—the political costs of removing protection outweigh the benefits of doing so.