In 1987 he graduated from Monsignor Farrell High School where he was on the cross-country and long distance track teams. He graduated from Villanova University in 1991.
He is a Democrat and has served in the Assembly since 2003. Cusick began his career as a Special Assistant to former President of the City Council Andrew J. Stein. 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.
Cusick later became Director of Constituent Services for United States. Senator Charles East. Schumer, as Schumer’s liaison to New York State elected officials and to various federal agencies. He managed the day-to-day operation of the Senator’s New York City office.He was elected to the New York State Assembly in the 2002 state elections.
After Republican Vito Fossella"s resignation, the Democratic Congressional Campaign Committee expressed interest in Cusick as the Democratic Party nominee, but he declined.
As Assemblyman, Cusick has written and sponsored several bills. In 2003, he wrote a law creating a moratorium on building in the area of the Mid-Island Blue Belt (Chapter 84 of 2003).
He wrote legislation requiring notice to neighboring landowners of an application to build on wetland areas. In 2006, he helped pass a budget that increased school aid by $500 million over the previous year.
The budget also included a down payment of $1.8 billion to renovate and expand city schools.
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). In 2006, he supported a budget that abolished the state tax In 2008 Cusick introduced legislation that would make it a crime to protest or disturb in any way a funeral or memorial service.