Mexico is responsible for 76% of all the beer imported by the US last year, according to Commerce Department figures cited by the Beer Institute. If production upsets emerge, American beer drinkers could be in for a surprise of soaring prices, tight supplies, and an even worst-case scenario: A beer shortage.

Besides Heineken and Constellation, Grupo Modelo, owned by Ab InBev, is another larger brewer in the northern part of the country.