IIRC from a West Wing episode (where spoiler, the Speaker of the House becomes president due to an invocation of the 25th Amendment) one cannot serve two branches of the government at the same time.  I&#x27;ll try to find the law that backs that up.<p>Edit: I think the rule in question is the Ineligibility Clause: <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Ineligibility_Clause" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Ineligibility_Clause</a>.  Contrary to how it was phrased in the WW, this seems to only affect serving in the Legislative branch and the Judicial or Executive branch at the same time.  I don&#x27;t think it in itself puts limit on serving in the Executive and Judicial branches simultaneously.