 Weinberg handpicked executives with whom he wanted to develop business relationships, and deliberately invited no other investment bankers to join the Council, putting himself in the perfect position to network.Roosevelt admired Weinberg's work greatly, nicknaming him “The Politician” and offering him numerous federal appointments, all of which Weinberg refused.When the United States entered World War II in 1941, Weinberg played an active role in engaging America's private sector to overcome the nation's considerable financial, industrial, and organizational challenges.