This quote contains two separate policy suggestions: (1) Trade barriers insulate production and welfare from any adverse responses to costly environmental restrictions. (2) Banning multinationals would insulate production and welfare from any adverse effects of costly environmental restrictions....

The incorporation of increasing returns and imperfect competition into applied general-equilibrium (AGE) models, beginning with Harris (1984), led to much larger welfare effects from changes such as trade liberalization. But the imperfect competition side of these IO developments has often...

Applied general-equilibrium (AGE) models have often made compromises to circumvent difficult modeling problems. One of these is avoiding endogenous zeros, ruling out important questions. Traditional perfect competition models: when do technologies or trade links switch from active to inactive or...