Though not professional licensing, we had an example of the unintended consequences of licensing here (Minneapolis) when there was a proposal to license communi

Though not professional licensing, we had an example of the unintended consequences of licensing here (Minneapolis) when there was a proposal to license community gardens. Though the licensing would not be particularly expensive it would also mean gardens would require insurance, because the city would have liability if something happened at a licensed location (but as long as the city simply wasn't involved no one could sue the city). The result of course would simply halt these otherwise entirely non-commercial efforts, as much out of bureaucratic overhead as financial.