I'm in Florida, and I just want to point out that the obesity issue is a function of class and culture. (Although yes, overall America has a huge obesity problem.) I teach at a private school here (our annual tuition is about the same as a minimum wage worker's annual salary) and while we do have obese students, I'd say it's about 5% of our students (and parents), and they're still more 'regular obese' and not 'struggles to breathe' obese. I too am shocked when I go to Wal-Mart, the grocery store, etc.
Poor Americans don't get access to healthy food (meaning, real food costs a lot more here and the grocery stores in the nicer parts of town are going to get a higher % of the healthy food from distributors), don't have access to exercise equipment, and don't come from a culture that values those things.