In Minnesota, a proposed law would require all painting to be done by or under the supervision of a licensed painter by restricting the sale of paint in cans one gallon or larger to licensees, establish a paint contractor board, and licensing for paint contractors painters. Companies like Home Depot, Sherwin Williams, and even the local hardware store would enforce that law if it becomes one.
The politician who sponsored the bill (Erin Murphy) has a bit of a conflict of interest. Her husband owns a painting company.