"Colombia is one of the largest producers of cocaine globally, and it also produces heroin bound for the United States. Counternarcotics policy has long been a key component of the U.S.- Colombian relationship, which some analysts have described as 'driven by drugs.' In recent years, Colombia revised its approach to counternarcotics policy, which may have implications for the U.S.-Colombian relationship going forward. On September 13, 2017, President Trump cited the recent spike in Colombia's cocaine production as the reason he was reserving the option to decertify Colombia as a cooperating partner in fighting illegal drugs, an unexpected development given the close counternarcotics partnership between the United States and Colombia."
CRS Report for Congress, R44779
Congressional Research Service: https://crsreports.congress.gov/