In a model where all factors of production are imperfectly mobile, we
argue that the Dixit-Norman scheme of commodity taxes may not lead to
strict Pareto gains from trade. Rather, this scheme must be augmented
by policies that give factors an incentive to move between industries:
hence, the role for trade adjustment assistance. By offering an adjus
tment subsidy to all individuals willing to move, and also using the D
ixit-Norman pattern of commodity taxes, the government can implement P
areto gains from trade under the condition we identify,