Billionaire investor Carl Icahn said thanks but no thanks when real estate mogul turned Republican presidential candidate Donald Trump floated his name for U.S. Treasury secretary. “I am flattered but do not get up early enough in the morning to accept this opportunity,” Icahn, 79, said in a public statement one day after Trump, 69, told cable station MSNBC that Icahn could be a dream Treasury pick if he wins the White House in the 2016 presidential election.