This story is part of Big Ag U, a series by Harvest Public Media and Investigate Midwest on corporate influence at public universities across the Midwest. Harvest Public Media reports on food systems, agriculture, and rural issues through a collaborative network of NPR-stations throughout the Midwest and Plains. Investigate Midwest is an independent, nonprofit newsroom covering agribusiness, Big Ag, and related issues. Read Part 1 and Part 2 of this series.