Especially when said dynasty was partially established through profits from the Holocaust.
See, Prescott Bush, father of George Herbert Walker Bush and grandfather of George Walker Bush (Dubya), was director of the NYC-based Union Banking Corporation and a member of the firm Brown Brothers Harriman. A major client of these companies was Fritz Thyssen, who in the early 1930's was a vital financial supporter of Hitler and the Nazi movement, until they had a falling out towards the end of the decade. Thyssen owned the largest steel and coal company in German and the re-armament efforts made him enormously wealthy. A bank he controlled in the Netherlands owned UBC, which worked exclusively on his behalf. One of the businesses that was part of the network of multinational front companies owned and run by UBC was Consolidated Silesian Steel Corporation, based in the mineral rich area of Silesia, on the German-Polish border. CSSC used slave labor from Auschwitz and other concentration camps to maintain a high profit margin. Prescott Bush was linked to the management of CSSC. In 1942, after America entered the war, Bush's interests were seized under the Trading With The Enemy Act, but not his personal fortune. Also seized was a side-venture of Prescott Bush, the Silesian-American Company.
The money Prescott made helping enrich the backer of the Nazis was used to secure George HW's future - Yale, top level connections, etc, and that in turn secured Dubya's legacy.