Threatens career mobility and destroys good licensing models that are working.
Weakening licensing standards on a state-by-state basis will destroy the confidence in qualifications and completely disrupt existing mobility models. States will be less inclined to accept out-of-state licenses if some states have rigorous requirements and some states have weak requirements. This uniformity of standards establishes a baseline of trust in the qualifications of practitioners from other states that makes it possible for professionals to move from one state to another and have their license acknowledged.
The result: it will become more difficult for professionals to move and maintain their careers across states.