Super Bowl guac may be off the table if gas shortage sidelines Mexican avocados

A handwritten sign on a pump at a closed gas station in Mexico City says, "There is no gas."

(CNN)The biggest story in Mexico right now has nothing to do with US President Donald Trump's proposed border wall.

But it's something that could have a major impact on the United States.
Gas stations in at least six Mexican states and the country's capital have been running dry for days. It's provoked a major public outcry. And there's some concern exports could be affected.