We know from visual experience that a bunch of Americans are morbidly obese. I prefer the word “grossly” to “morbidly” as an adverb for obese – but that is mostly because if someone expires from obesity, I would no longer have to look at them, and that would make my daily observations less “gross”. The most recent data from the National Health and Nutrition Examination Survey estimates that 33.9% of Americans are obese.
Obesity is a very expensive medical cost, estimated at 147 billion dollars annually. My contention is that this money could be spent in better ways to combat this epidemic. Bigger and better burgers are not the answer. 
Non hispanic black americans have the highest obesity rate (36.8%) in these studies. Taking into consideration the higher rate of unemployment, the unintended effects of bigotry (see unemployment), and the assumption that Charles Darwin’s theory regarding the survival of the fittest (when viewed through the historic lens of slavery) should have propagated the healthiest race of people anywhere. I could find no concrete explanation for this phenomenon – my only guess is that fast food is generally cheaper and unhealthy compared to their healthier counterparts.
Hispanics have an obesity rate of 30.7%, but these are hispanics in America. My experience with food in Mexico is very healthy. On the other hand, for many hispanics to reach America, they must be able to swim which is excellent exercise.
It seems to me that using simple American Ingenuity, for which we are famous, would enable us to find a way to make these 33.9 percent of Americans proportionately taller. This would seem to be a reasonable response to the problem (and a great way to utilize that 147 billion dollars annually), and could also be a huge boon to the NBA and the WNBA.
Asians have the lowest obesity rate (16.7%) which only reinforces my belief that if we could just make people much taller, BMI would drop dramatically.
But the very best idea yet would be to engineer people to be around 4′ tall and weigh no more than 90 pounds. The effect on our collective carbon footprint would be amazing. Virtually everything from automobiles, planes, clothes, and furniture (to list but a few), would have a tremendous impact on the effect humans have on this planet. These issues could possibly even be accomplished within a few generations using the aforementioned funds.