new york billionaire investor carl icahn continue throw support behind republican u.s. presidential candidate tuesday say donald trump would reduce regulation u.s. company icahn also say nutrition weight management company herbalife would strong candidate go private say move would allow avoid kind criticism aim pershing square hedge fund founder william ackman look ahead three years economy lot good trump get elect rather democratic candidate hillary clinton icahn say speak cnbc deliver alpha event new york trump say icahn would great u.s. treasury secretary though whether 80-year-old hedge fund manager would commit role remain unclear icahn express frustration u.s. regulators tuesday specifically environmental protection agency say neglect speak concern regard ethanol blend requirements fuel refineries investment portfolio icahn say fear irrational government regulations main reason chief executives re-investing businesses instead buy back stock trump would aim reduce regulations icahn say icahn also address ongoing feud ackman 2012 claim herbalife run pyramid scheme make huge wager stock icahn emerge late buyer share herbalife settle probe sales practice u.s. federal trade commission july icahn continue buy share feud ackman continue think herbalife certainly candidate go private fact frankly wear shareholder hat think herbalife lot good private get away ackman-type criticism icahn say cnbc event ackman drive everybody crazy right obsess this ackman spokesman immediately return email seek comment icahn say trump good u.s. economy clinton