First of all, you will need to decide what career path you want to choose. Are you interested in going for Auditing career (external or internal) - go for CPA, or you are more interested in going for Financial sector - go for MBA.

Second, are you planning to return back to Nepal in next few year - go for MBA, are want to stay in USA for next few years- CPA?

Thirdly, Are you US citizen?? If yes- doesn't matter. Else go to step 4.

Forthly, Situation of Job market. Job market is terribly bad for MBA currently. Because of TARP rules even big Financial Institutions are rejecting MBAs from top teir schools. Do you think, you are better than them??- If yes, you would not be here asking this question.

Lastly, MBA and CPA are diverse as Cheese and chalk. Don't confuse them to be the same.