U.S. remains `` vigilant against emerging trends and ever-changing tactics '' by smugglers . `` When you look at cartels , their goal is to flood the U.S. with as much drugs as they possibly can , '' Barden said . The United States has been working with the Philippines to stop illegal drugs from entering its territory through a network of surveillance planes that have flown over the South China Sea. It crashes in a Tijuana supermarket parking lot before it can reach U.S .
U.S. remains `` vigilant against emerging trends and ever-changing tactics '' by smugglers . The United States has been working with the Philippines to stop illegal drugs from entering its territory through a network of surveillance planes that have flown over the South China Sea. It crashes in a Tijuana supermarket parking lot before it can reach U.S .