receiving foreign visitor speech
The United States encourages technical information exchanges with scientists from foreign countries, because much can be gained from international collaboration. Most of these visitors are here as our guests at our request. Obviously most visitors are not engaged in intelligence work. They do only what they were invited to do. The problem is that in such a flood of visitors, it becomes hard to detect those who do come with ulterior motives. Without appropriate security precautions, it is possible to lose a great deal of classified, proprietary, or otherwise sensitive information.