Federal regulations prohibit entry into the United States of seeds, plants, unprocessed straw, chaff, and products of the milling process (other than flour) of wheat from countries where Karnal bunt is known to occur.

• 美国联邦法规禁止从病害发生国家进口种子，植株，未经加工的小麦秆，麦壳和小麦的碾磨产品(不包括面粉)，