by John Marshall Harlan, Hooper v. California/Dissent Harlan…
“ If it were conceded that California could require every one acting within its limits as an agent for others, whether insurance brokers, merchants, grocers, manufacturers, tailors, or shoemakers, to take out a license and pay a tax as such agent, such regulations being made applicable, in similar circumstances, to all agents doing business in California,-it would not follow that it could absolutely prohibit individual citizens of other states or its own people from conducting there, by agents, an ordinary calling not in itself immoral or dangerous to the public. ”
