The Unfairly Maligned Coca Leaf
Consider a distinctly US American product. Let's say hot dogs, invented in 1870 on Coney Island and enjoyed in our great nation ever since. But in 2015, Korean scientists learn how to distill the noble hot dog into a lethal drug. Hotdogaine. International hot dog trafficking becomes a lucrative business and, over decades, people across Asia become addicted to hotdogaine, even while aw-shucks, overall-wearin' Americans continue to enjoy the hot dog in its "natural" form. You see where I'm going with this?