[1] Mack has been a major donor to Republican candidates, including Governor George Pataki.
[7] Mack is a member of the boards of Boys Town Jerusalem, Hofstra University, Israel Bonds, Joseph L. Morse Geriatric Center, New York Holocaust Memorial Committee, North Shore-Long Island Jewish Health System Foundation, Palm Beach Community Chest and United Way, Pratt Institute, United Jewish Appeal (UJA) of Greater New York and Long Island,[7] and serves as the president of the Nassau County Police Department Foundation.
[11] He has been an honorary deputy superintendent of the New York State Police since 1995 despite having no law enforcement experience.
[13] Mack has a longstanding relationship with the Nassau County Police Department where he has served as an unsalaried assistant commissioner since at least the mid-1980s.
[11] He is the Chair of the Long Island Rail Road/Long Island Bus, Bridges and Tunnels Committee, and a member of the Capital Program Oversight, Finance, Interagency Coordination, Audit, Governance, Diversity, Safety and Security, Capital Construction/Planning and Real Estate, New York City Transit, Metro-North Committees.
[16] After losing his placard, Mack began voting against MTA plans for congestion pricing in New York City, which had been in the works since 2019.