The requirement for a passport at all US borders is an issue local commerce between Washington State and Canada, and the new driver's license is less expensive then a passport, but what "other" costs will it create?"They will look much like conventional driver's licenses, but will be loaded with proof of citizenship and other information that can be easily scanned at the border."
The most exciting phrase to hear in science, the one that heralds new discoveries, is not "Eureka!" (I found it!) but "That's funny ..." -- Isaac Asimov