WASHINGTON – The chairman and ranking member of the Senate Judiciary Committee, Sens. Chuck Grassley (R-IA) and Patrick Leahy (D-VT), as well as the chairman and ranking member of the Senate Judiciary Subcommittee on Antitrust, Competition Policy, and Consumer Rights, Sens. Mike Lee (R-UT) and Amy Klobuchar (D-MN), sent a letter today to Government Accountability Office Comptroller General Gene Dodaro calling for an investigation of the fed cattle market.