Regular visitor Lisa from Rochester sent me this story from a local TV station (WHAM channel 13 in Rochester):
By next summer, drivers will need a passport or an enhanced driver license to return to the United States from Canada.
An enhanced license will look similar to the one you already have with an American flag on the front.
A radio frequency chip inside will also allow border guards access to important extra information the driver provided to the DMV to prove your citizenship.
It’s as good as a passport for re-entering the US from Canada, Mexico, The Caribbean, or Bermuda.