FILE - In this Tuesday, June 12, 2012 file photo, FBI agents overlook a horse ranch under investigation in Lexington, Okla. Prosecutors say a racehorse-buying operation was supposed to

 

              FILE - In this Tuesday, June 12, 2012 file photo, FBI agents overlook a horse ranch under investigation in Lexington, Okla. Prosecutors say a racehorse-buying operation was supposed to
FILE - In this Tuesday, June 12, 2012 file photo, FBI agents overlook a horse ranch under investigation in Lexington, Okla. Prosecutors say a racehorse-buying operation was supposed to be a clandestine way for one of Mexico's most powerful and violent drug cartels to launder its illegal proceeds in the United States. But authorities reined in the operation partly because those who ran it didn't keep a low profile. At least four of the 18 individuals indicted in the scheme are set to be tried in an Austin, Texas, federal courtroom starting Monday, April 15, 2013. (AP Photo/Brett Deering, File)