By enhanced driver's license, I believe Eric meant the US passport card that US Citizens can carry to cross the Canadian or Mexican boarders by car. It's issued in addition to the traditional passport that you need to travel by air and looks like a driver's license but it's a passport card for car or walk boarder crossings.
I have my paperwork all printed out ~ just have to get the darn picture and send it in with the $$$$$$ of course to have this convenience for crossing the boarder without carrying my traditional passport.
Sandy