(These are from my online Latin America-focused government reports library.)

Colombia’s Changing Approach to Drug Policy
Congressional Research Service, March 10, 2017

An overview of illicit crop eradication, drug interdiction, the recent history of U.S. counter-drug assistance, and changes likely to come with the 2016 peace accord.

Southwest Border Migration
U.S. Customs and Border Protection, March 8, 2017

Every month since May 2014, U.S. Customs and Border Protection has reported the number of unaccompanied, undocumented children and family-unit members apprehended at the U.S.-Mexico border during the previous month. This report covers February; the January report was released on February 27.

El Salvador: Background and U.S. Relations
Congressional Research Service, March 8, 2017

A look at security, migration, and political trends, and recent deliveries of U.S. assistance.

International Narcotics Control Strategy Report
Bureau of International Narcotics and Law Enforcement Affairs, U.S. Department of State, March 2, 2017

An annual narrative of efforts to reduce illegal drug production and transshipment, including U.S. assistance, in each country that the U.S. government considers to be a major source or transit country.

Southwest Border Security: Additional Actions Needed to Better Assess Fencing’s Contributions to Operations and Provide Guidance for Identifying Capability Gaps
United States Government Accountability Office, February 16, 2017

A thorough review of the current use of fencing along the U.S.-Mexico border.

Border Security: Additional Actions Needed to Strengthen Collection of Unmanned Aerial Systems and Aerostats Data
United States Government Accountability Office, February 16, 2017

Information about Customs and Border Protection’s employment of drone and tethered aerostat technology to detect illicit activity at the U.S.-Mexico border.