InvestmentsTop Global NewsMarketsReal Estate Trump nominates his top aide Christopher Liddell to head OECD By financialnews_rlv83x - July 24, 2020 0 126 The United States plans to nominate deputy White House chief of staff Christopher Liddell to become the next secretary general of the Organisation for Economic Cooperation and Development (OECD), a senior administration official said on Friday.