Why do Mexicans have to come here illegally to "feed their families" when Mexico=fattest country on earth?

I get what your saying. They claim to be starving and this is another bogus excuse for them coming here. I have never seen any that even look as if they are not eating. They will go to any extreme to excuse their criminal behavior. And with so many illegals in this country, don't you believe they are contributing to the U.S. being the fattest nation.