Coming up later today on "Marketplace, " we're going to see how the citrus industry is facing an even bigger threat than hurricanes.

NPR: The Marketplace Report: Greenspan's Successor

By expanding the list to include other products, like oranges, the Mexicans hope to impress upon other U.S. interests, like the citrus industry in a very important swing state, that they have dogs in this fight as well.

FORBES: Mexico Is Right To Retaliate Over U.S. Ban On Mexican Trucks

Fortunately for the state's most important industry, citrus, the infestation is occurring before the fruit is ripe and being prepared for shipping to distant markets.

ECONOMIST: Florida agriculture

As one grower told a reporter, few things could do more harm to the state's citrus industry (not to mention people's breakfasts) than to have a consumer cut into a Florida orange one morning and find maggots.

ECONOMIST: Florida agriculture

The inland southern counties are agricultural, home to an immense and profitable citrus industry, and tend to vote Republican.

ECONOMIST: The swing states: Florida