Lewis Michael Eisenberg

Lewis Michael Eisenberg is an American financier and investor who was the United States Ambassador to Italy and the United States Ambassador to San Marino. He is known for co-founding and heading private equity firm Granite Capital International Group L.P. He has a multi-decade history in American political fundraising circles and has held a number of national, state, and bi-state appointments throughout his career, including serving as the chairman of the Port Authority of New York and New Jersey at the time of the September 11, 2001 attack of the World Trade Center, which the Port Authority operated.