Is Hillary Clinton "Invalid" - ?

Arcane Topic Alert: Eugene Volokh muses about whether the Emoluments Clause of the U.S. Constitution bars Senator Hillary Clinton from being appointed Secretary of State by the President-Elect.

Some suggest historical precedents for various "fixes" to the quandary.   But others suggest those fixes won't work in the present case.  

Intriguingly, Sen. Robert Byrd (and supposedly Justice Breyer) opposed Nixon's "Saxbe Fix" back in the 1970s.   And, just for fun: Definition and etymology of Emoluments.