Tariffs may take the wind out of US agricultural exports

Sioux County, Iowa, is home to just 34,000 people, but more than 1 million hogs. Marathon County, Wisconsin, has a population of 135,868, and is home to 180 growers of ginseng.

On Monday, ginseng and pork were among the 128 US goods that China said will face new tariffs in response to US tariffs on steel and aluminum that took effect last week.

Ginseng and 119 other products - including fresh and dried fruits, nut products, wine and modified ethanol - face 15 percent tariffs. Pork and pork products and recycled aluminum are among eight products that will face tariffs of about 25 percent.