There are enough laws on the books emphasizing the exclusivity of engineering work to the domain of registered engineers to entice a plethora of trial lawyers to go after every major consumer product firm and provide ample financial justification to re-establish the profession.
IMHO, the professions have been targets as a sideproduct of political machinations of socialists from communistic leanings. The ol' bougeousie to be first eliminated. Notice how all the functions of Environmental Engineering were the prior domains of Civil Engineering, Chemistry, Biology, and Architecture. Yet the cofers which should be directed to those professions are redirected to subprofessional regulators controlling 'Environmental Engineering'.