> I'm not sure why you think labor unions would impose them Because unions have often in the past imposed various credentialling requirements, followed by quot

> I'm not sure why you think labor unions would impose them Because unions have often in the past imposed various credentialling requirements, followed by quotas on the credentials given, as a way to push up wages. For example the UK health system is wrecked by this. Medical unions insist on very low numbers of school places, too low to meet demand, so the government is forced to rely on immigration to fill the gaps. The unions love this because they're all overtly left wing organizations and want mass migration, also they see immigrants as free Labour voters. But being unable to actually train sufficient doctors is a bad place for the country to be in.