"I supported occupational licensing when I was a young consumer reporter," writes John Stossel in his latest column. "But now I've wised up. Now I see that it doesn't protect consumers. Competition and reputation are better protection. When you move to a new community, do you choose new dentists or mechanics by checking their licenses? No. You ask neighbors or colleagues for recommendations, or check Consumer Reports and Angie's List. You check because you know that even with licensing laws, there is quackery."