Alan Nelson of the INS notes the extensive flow of illegal aliens and illegal drugs across the Mexican border and recommends enhanced border enforcement, legislation that will sanction employers who knowingly hire illegal aliens, and cooperation with Mexico in curtailing illegal immigration. Rear Admiral Clyde Robbins of the U.S. Coast Guard discusses the Coast Guard's cooperation with the Navy in drug interdiction and counterterrorism efforts. A A representative of the Defense Department Task Force on Drug Enforcement testifies on the loan of military equipment to drug enforcement agencies and the provision of military drug smuggling surveillance. David Westrate of the DEA reviews the nature and extent of drug trafficking across the Mexican border, describes joint United States and Mexican drug enforcement efforts, and considers drug trafficking across the Canadian border. William Logan of the of the Customs Service describes the serious drug trafficking problems on the Mexican border and Customs drug enforcement efforts in this region. Steve Pomerantz of the FBI's Terrorism Section testifies that the entrance of terrorists into the United States across the Mexican border is a concern, but there is no evidence that this has occurred. Witnesses' written statements are included.