OP's shining example of Mexico is essentially as obese[0], and far less educated[1] than Americans on average. It's embarrassing to be this blind to the state of things when you have the resources to check your opinions for accuracy.

[0] https://en.wikipedia.org/wiki/List_of_countries_by_obesity_r... [1] https://en.wikipedia.org/wiki/Education_Index

Well, the "fat" part is true, the US is #2 in obesity among developed countries. In many education metrics we are average or below average compared to the OECD countries (despite spending more than others) - let's round it out to "average". The others are less measurable.