If you qualify, a Trusted Traveler Program can save you a lot of time. These programs have been instituted by the U.S. Department of Homeland Security, Customs and Border Patrol. There are three different programs as of this writing; all are attempts to save you time.
They provide expedited travel for pre-approved, low risk travelers by allowing them to pass through special lanes and kiosks at certain airports and border crossings.
#1: The Global Entry Program
The Global Entry