World ‘Exhibit A’: How McKinsey Got Entangled in a Bribery Case December 30, 2018WALT BOGDANICH and MICHAEL FORSYTHEComments Off on ‘Exhibit A’: How McKinsey Got Entangled in a Bribery Case The consultancy’s report became key evidence in a battle over the extradition of a powerful Ukrainian oligarch charged in a scheme to help Boeing.