Marsh McLennan Agency is a full-service insurance broker focusing on all personal and business insurance products. Focused on our clients, colleagues and communities, Marsh McLennan Agency also manages the Montana Schools Property and Liability Insurance Plan, (MSPLIP). MSPLIP is the largest and longest standing property and liability insurer of Montana schools, commencing operations in 1995. MSPLIP is a leader in the scholastic public entity space and provides insurance and risk management assistance to public school districts throughout Montana.