Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
Demands by domestic industries for protection from foreign competition aided by lower standards have led to proposals to set trade barriers conditional on the environmental policies of other countries. This article shows that the threat of such environmental duties can assist in achieving global efficiency when countries cannot commit to a negotiated environmental standard. In addition, this article shows that, in a repeated game framework, the enforcement of a free‐trade agreement may require some convergence in environmental standards across countries when trade is driven by differences in such standards. However, it is also shown that it is more efficient to enforce a trade agreement by setting tariffs to partially offset differences in policy standards than to attempt to harmonize standards within environmental side agreements.