This paper studies attitudes towards trade and the NAFTA agreement in its member countries, Canada, Mexico and the US. It finds that in all countries, there is a favourable opinion on trade. Mexicans and Canadians are also largely pro NAFTA, while opinions in the US are much more divided. Opinions also vary with gender and age. The paper suggests that NAFTA has become a toxic brand in the US, as there are more hostile views towards it than can be explained by attitudes towards trade.