Drug Wars: The Cocaine Cartel(1992)

A D.E.A. Agent goes to Columbia to take on the Cartel. He learns that the Cartel is not above killing anyone who opposes them, like judges and Police. Eventually a man who worked for the Cartel, who is in an American prison, offers to help them take down the Cartel. So another Federal Agent poses a money launderer and the try to take the Cartel down.