This week’s Open Mic guest is U.S. Senator Charles Grassley. The Iowa ag leader is in the thick of issues from renewable fuel policy to global trade agreements. Grassley wants a government response to cattle price discovery and offers a willingness to compromise on policy options. The meatpacking industry will be the focus of a pair of hearings this week, one by the Senate Judiciary Committee, and another by a House Agriculture subcommittee. He also offers insights on confined animal feeding operations, interstate commerce, sustainable agriculture, EPA and USTR.