Lee Rosenberg is a prominent American businessman, philanthropist, and advocate for U.S.-Israel relations from Chicago, Illinois. He built a successful career in insurance and financial services, founding and leading companies including the Macomb Group where he served as CEO. He served as President of the American Israel Public Affairs Committee (AIPAC) from 2009 to 2011 (with some sources indicating 2010-2012), playing a key role in advancing the organization's mission to strengthen bipartisan support for Israel in Congress. A respected figure in Chicago's Jewish community, he has been active in philanthropic endeavors supporting education, health, Jewish causes, and Israel advocacy through organizations like the Jewish United Fund of Metropolitan Chicago, and remains involved in pro-Israel philanthropy. Post-AIPAC, he continues to be active in Chicago's civic life focusing on education reform and charitable work, though his tenure drew some criticism from progressive groups for AIPAC's lobbying tactics.