He was the office representative for the Borough of Staten Island and worked on issues regarding incineration and waste management alternatives.

Cusick was also Vitaliano's representative to local and statewide civic, professional, and union organizations, on legislative and community issues.

In 2005, he sponsored legislation that allowed New York City to eliminate its share of the sales tax on clothing and footwear (Chapter 285 of 2005).

[10] Cusick later resigned as he took up his new role as the head of a local not-for-profit, the Staten Island Economic Development Corporation and was succeeded by one of his vice-chairs, Laura Sword.

[11][12] During Senate Session 2023, Governor Kathy Hochul appointed Cusick to the New York Power Authority Board of Trustees.