The U. S. Department of Labor recently issued a new statement on whether interns qualify as employees of businesses and non-profit organizations.
Here are links to the guidance document and a news story.
https://www.dol.gov/whd/regs/compliance/whdfs71.pdf
https://www.hrdive.com/news/dol-scraps-6-factor-unpaid-intern-test/514226/
Social Law Resources include:
The Fair Labor Standards Act
http://encore.socialaw.com/iii/encore/record/C__Rb1142293
Employment Coordinator
http://encore.socialaw.com/iii/encore/record/C__Rb1077789