Longtime Donald Trump supporter and activist investor Carl Icahn confirmed on Tuesday that the president-elect is looking at Wall Street veteran Steven Mnuchin as his choice for treasury secretary and billionaire Wilbur Ross for commerce secretary. “Spoke to @realDonaldTrump. Steve Mnuchin and Wilbur Ross are being considered for Treasury and Commerce. Both would be great choices,” Icahn wrote on Twitter. 1/2 Spoke to @realDonaldTrump. Steve Mnuchin and Wilbur Ross are being considered for Treasury and Commerce. Both would be great choices. Icahn, a close ally of Trump who was often praised by the Republican during the presidential campaign for his...