The Board of Immigration Appeals has determined that a non-citizen who cooperated with United States law enforcement against a cartel did not demonstrate a clear probability of torture because his fear was based on unsubstantiated statements from a coconspirator and generalized evidence of cartel violence.
The full text of Matter of J-C-A-G- can be found here: https://www.justice.gov/eoir/media/1420746/dl?inline