NEWARK, May 8 Ñ A businessman and Democratic fund-raiser was charged today with extorting payoffs from gambling operations in West New York while claiming to represent a high-level official, believed by many to be Mayor Albio Sires, now speaker of the New Jersey Assembly. The businessman, Rene Abreu, 40, is a mortgage broker and real estate developer active in North Jersey politics who has raised money for Mr. Sires, for Senator Robert G. Torricelli and for Representative Robert Menendez. Mr. Abreu and his wife, Lourdes Adan-Abreu were named with nine employees and associates in the indictment. Mr. Sires, who is...