I would like to work in a US musuem (like many of the subscribers here) but
am
wondering if I need a Masters to be considered. As it is, it has been
difficult with just my BA-- would you say it were equally difficult with an
MA? 

Also, if I were to get a Masters, do US museums only acknowledge MAs from
American universities, or would they also accept, say a "Magister" (the
equivalent, also involving a thesis and 6+ years total in a university)
from a German university. 
(I am American and got my BA in Art History from an American University)

Thanks in advance for a reply.

Melissa Michelson