hedge fund manager steve mnuchin say morning president-elect donald trump select lead treasury mnuchin tell cnbc.mnuchin spend 17 years work goldman sachs investment firm produce multiple secretaries treasury go produce hollywood blockbusters take helm trump fundraise operation year selection late example trump tap insider staff government attempt keep pledge drain swamp make america great another move fill economic team trump tap billionaire wilbur ross serve next secretary commerce.read daily mail break trump pick private sector titans trade commerce believe