The U.S. Customs and Border Protection runs a program called Global Entry, allowing low-risk travelers to complete an application, submit to a background check and interview, and eventually be approved for a "fast lane" through immigration and customs when arriving in the US from a foreign destination.
What steps are involved in the application and approval process? And, specifically, about how long on average do applicants have to wait from the time of their application to the time of their final approval?