1.   A ban or tariff could result in Archer Daniels losing its principal market for the product, called corn gluten feed, which profits from its duty-free status.

2.   Adding the waste products misled European customers into thinking the corn gluten feed contained a higher food value than it actually did, Whitacre said.

3.   Most of the corn gluten feed made in the U.S. is shipped to European animal feed manufacturers.

4.   Residue of the steep water used to make amino acids is then used in producing corn gluten feed.

5.   The smaller herd means less demand for corn feed, which pushed corn futures lower.

6.   Corn gluten feed, a byproduct of processing corn, is largely used as feed for cattle.