The crisis in Colombia what are we facing? : hearing before the Subcommittee on Criminal Justice, Drug Policy, and Human Resources of the Committee on Government Reform, House of Representatives, One Hundred Sixth Congress, second session, February 15, 2000.

Eitemau Tebyg

• Crisis in Colombia U.S. support for peace process and anti-drug efforts : hearing before the Committee on Foreign Relations, United States Senate, One Hundred Sixth Congress, first session, October 6, 1999.
  Cyhoeddwyd: (2000)
• The study of Plan Colombia an assessment of successes and challenges : hearing before the Subcommittee on Criminal Justice, Drug Policy, and Human Resources of the Committee on Government Reform, House of Representatives, One Hundred Seventh Congress, first session, March 2, 2001.
  Cyhoeddwyd: (2002)
• Plan Colombia the strategic and operational imperatives /
  gan: Marcella, Gabriel.
  Cyhoeddwyd: (2001)
• U.S. policy regarding narcotics control in Colombia hearing before the Caucus on International Narcotics Control, United States Senate, One Hundred Eighth Congress, first session, June 3, 2003.
  Cyhoeddwyd: (2004)
• Challenges and successes for U.S. policy toward Colombia is Plan Columbia working? : hearing before the Committee on Foreign Relations, One Hundred Eighth Congress, first session, October 29, 2003.
  Cyhoeddwyd: (2004)