The service sector is large and growing. Additionally, international trade in services is growing rapidly. Yet there is a dearth of empirical research on the size, scope and potential impact of services trade. The underlying source of this gap is well-known--official statistics on the service sector in general, and trade in services in particular, lack the level of detail available for the manufacturing sector in many dimensions. Because services are such a large and important component of the US economy, understanding the implications of increased trade in services is crucial to the trade...