I don't see any other way than to grandfather in all or most current practitioners. Take, say, everyone with five years of documented experience and a relevant

I don't see any other way than to grandfather in all or most current practitioners. Take, say, everyone with five years of documented experience and a relevant degree. Congratulations, they are now certified engineers. Provide ways for workers who don't quite meet those standards to get themselves in compliance. But enforce requirements for all incoming graduates from then on. And there might be requirements for ongoing training for everyone, too, the way there are for lawyers and doctors. As to who would do this, there are organizations like the IEEE and the ACM that would be only to happy to help.