Senate Judiciary Committee Chairman Sen. Charles Grassley, R-Iowa, left, greets Jim Blome, President & CEO, Bayer CropScience North America, and Dr. Robb Fraley, right, Executive Vice President & Chief Technology Officer, Monsanto Company, on Capitol Hill in Washington, Tuesday, Sept. 20, 2016, prior to the start of the committee’s hearing on a proposed $66 billion merger of American seed and weed-killer company Monsanto and German medicine and farm chemical maker Bayer. (AP Photo/Pablo Martinez Monsivais)