“… After years of increasing the number of occupations subject to licensing and permit requirements, states are starting to dial back. Where only 1 out of 20 jobs required an occupational license back in the 1950s, now more than 1 out of 4 do.  … But which professions require oversight? … It’s generally the case that businesses themselves -- not consumers -- lead the push for licensing, making it more difficult and more expensive for newcomers to enter their fields.