Maine's own legislative style guide discourages the use of the serial (Oxford) comma.
Notes on verification
Directly confirmed by the text of the Maine Legislative Drafting Manual itself, plus multiple independent legal and news sources discussing the O'Connor v. Oakhurst Dairy case. [tier=gold indep_score=0.908 clusters=6 claim_tier=notable | framework convergence=single on Maine Legislative Drafting Manual (1990, revised through 2009) (upstreams: Maine Legislative Drafting Manual (Office of the Revisor of Statutes, Maine State Legislature)) — publishers independent, evidence may not be | kind=empirical eligibility=high (extractor: empirical/medium)]
Sources
- A Missing Oxford Comma Just Changed the Course of a Court Case (seed:law_and_crime)
- https://blogs.loc.gov/law/2017/06/the-law-and-punctuation/ (corroboration)
- https://www.ca1.uscourts.gov/sites/ca1/files/citations/Draftman2009.pdf (corroboration)
- https://scribes.org/wp-content/uploads/2022/10/Marcello-8.23.21.pdf (corroboration)
- https://www.boston.com/news/business/2017/03/16/lack-of-oxford-comma-costs-maine-company-millions-in-overtime-dispute/ (corroboration)
- https://www.cnbc.com/2017/03/16/lack-of-oxford-comma-costs-maine-company-millions-in-overtime.html (corroboration)
- https://www.isba.org/committees/governmentlawyers/newsletter/2017/05/the10millioncomma (corroboration)