How does Mullin qualify as acting secretary based on the under cabinet vacancies laws? I don't think he does. Do you know @RandPaul? It's your committ

How does Mullin qualify as acting secretary based on the under cabinet vacancies laws?

I don't think he does.

Do you know @RandPaul? It's your committee that would hold the hearings.

How can @POTUS appoint Mullin?