What qualifications or credentials does one have to have...?

Question

to be a "presidential advisor" to the US President?

Answer 1

high school graduate. 8 years college graduate in politics, know 8 different languages, show you've never missed a day of work, had experience in typing and filing and running a back hoe.

Answer 2

The only qualification is that the president asks you to advise him.

In practice, advisors are persons that have been especially helpful politically to the president, often before that person has been elected to the presidency.

Answer 3

Oh somebody important like Oprah.

Answer 4

,None whatever.  The president decides.  Hopefully, she has enough sense to pick carefully.