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This paper identies the decreasing heterogeneity in labor as one of the drivingforces ofsecular trade liberalization. A decrease in the sector-specificity of humancapital gives rise to a decline of protectionist demands since the workers’ stakesin trade policy resemble more and more the social welfare consequences of tradepolicy. Since the process of labor homogenization appears to be irreversible, wearrive at the conclusion that protectionist trade polices will soon become anobsolescent model. JEL classifications: D72, F13