Governments at all levels require you to have a license to work in many careers. Ostensibly the argument is that they are regulating public safety. In reality they are usually both fund raisers for the government and protection for those who are already in the career field.
This licensing imposes a greater burden on lower skilled workers trying to get jobs. When it costs thousands of dollars to pay for the government mandated training and then the license, many people are shut out of the career field,
The “License to Work: A National Study of Burdens From Occupational Licensing” is an awesome resource to examine the depth of the problem and learn of ways to lower the burden.