How long do North Dakota and South Dakota commodity and farm groups keep playing nice with President Donald Trump?

His trade war with China and his administration’s handling of the Renewable Fuels Standard are taking money out of farmers’ pockets.

Soybean prices are down $2 per bushel since talk of the tariffs on China started, according to the American Soybean Association.

The National Corn Growers Association says that Trump administration’s handling of blending exemptions for oil refineries is driving down the price of corn.

Rabobank projected that tariffs on U.S. pork total 71% and could effectively shut the U.S. out of the market.

On the day the Chinese tariffs when into effect, U.S. Wheat Associates and the National Association of Wheat Growers warned that implementation of the Comprehensive and Progressive Trans-Pacific Partnership (CPTPP) early next year without the U.S. is a "time bomb set to demolish more than 60 years of hard work by multiple generations of U.S. farm families to develop a large and loyal market for U.S. wheat in Japan."

But what are farmers and the groups that represent them going to do about it?

Issue more dire warnings to the media about the consequences?

Try again to "educate" Trump and his team?

Do like ASA members did and send pictures of themselves to Trump via social media in hopes that he sees who is hurting and changes his mind?

U.S. Secretary of Agriculture Sonny Perdue said he is pushing for government help for farmers hurt by the spreading trade war.

"I’m laying down a marker that we need to resolve it by Labor Day, or we need some sort of mitigation," Perdue told agricultural and timber leaders in Spokane, Wash., recently.

I’m not holding my breath.

If nothing happens, I think farmers ought to reconsider their support for the president and send a message in the November election. Maybe they ought to vote for Democrats. Control of the U.S. House and Senate may hinge on a several close contests, including one in North Dakota.

Maybe a message sent from the ballot box will get Trump’s attention.