A theory of gradual trade liberalization

This paper proposes a theory of gradual trade liberalization. I consider countries that are limited to self-enforcing arrangements in their trade relations. I argue that enforcement problems associated with the maintenance of low cooperative tariffs are exacerbated by the presence of resources in the import-competing sector that are (or potentially could be) earning rents from their sector-specific skills. Intuitively, by being able to transform into rents a portion of what otherwise would be dead weight loss under a tariff hike, the presence of such resources makes deviation from a low cooperative tariff to a high tariff more desirable for the deviating country, and makes punishments under reciprocally high tariffs less painful. Hence, the presence of rent-collecting resources in an import-competing sector acts as a deterrent to trade liberalization. But if an initial 'round' of liberalization can induce at least a portion of these resources in the import-competing sector to relocate to the rest of the economy, and if by not using their sector-specific skills these resources stand to lose them, then the enforcement issues associated with their presence will also diminish over time