Trump supporter at a Truckers for Trump rally in Iowa in January 2016.

The president of the American Soybean Association (ASA) issued a scathing statement Wednesday in response to Donald Trump's escalating trade war with China that suggests just how "devastating" Trump's offensive could be at the polls in November.

“It should surprise no one that China immediately retaliated against our most important exports, including soybeans. We have been warning the administration and members of Congress that this would happen since the prospect for tariffs was raised," ASA President and Iowa farmer John Heisdorffer said, adding that China's plan to impose 25 percent levies on soybeans would be "devastating" to American soybean farmers.

With soybean futures already down 40 cents a bushel as of Wednesday morning, amounting to a estimated $1.72 billion loss for soybean farmers, Heisdorffer noted:

That’s real money lost for farmers, and it is entirely preventable.

In short, we warned Trump, he did it anyway, and now he has singlehandedly created an entirely preventable nightmare.

That's a disaster for House Republicans running in farm country, particularly because the GOP hasn't done one single damn thing to rein in Trump or check his power in any way. Rather, they have totally unleashed him to do whatever he wants without considering the consequences of his actions on anyone, even American farmers, who voted for him in large numbers. Check out this map of competitive races in soybean country:

And the fact that Republicans are tethered to Trump’s every impulse hasn't been lost on Democrats running in rural areas.