Just Patronage? Familiarity and the Diplomatic Value of Non-Career Ambassadors

Career diplomats have expertise. Why, then, do U.S. presidents appoint relative novices to key diplomatic posts? Conventional wisdom points to patronage. Yet this explanation overlooks the benefits of a diplomat’s familiarity with political superiors. Inherent in delegated diplomacy is uncertainty over diplomats' ability to “deliver” on understandings reached at the negotiating table. Non-career diplomats often speak more credibly for political superiors, creating an incentive for foreign counterparts to engage in diplomacy. I theorize a tradeoff between familiarity and expertise to generate empirically testable prediction. Counterintuitively, I expect that presidents often sacrifice professional expertise to delegate important diplomatic assignments to relative amateurs, even accounting for the patronage value of the post. I find empirical support for the argument using a novel dataset on U.S. ambassadorial appointments from the Reagan through Trump administrations.