washington u.s. president donald trump pick secretary navy withdraw consideration sunday second time trump nominee lead one arm service bow government conflict-of-interest rule trump last month nominate philip bilden private equity executive former military intelligence officer lead navy president pledge expand statement sunday bilden say extensive review process determine able satisfy office government ethics requirements without undue disruption materially adverse divestment family private financial interest development leave trump secretary defense jim mattis without nominees head navy army vincent viola president pick secretary army withdraw early month statement mattis say disappoint understand bilden decision come days make recommendation president trump leader guide navy marine corps team execute president vision rebuild military say trump 's pick navy secretary withdraw