What should be my filing status

Hi,

  I am on H1B visa and working in California and my wife is working in India. She recently got her H4 and will be travelling to USA for just 15 days. We both are Indian citizens. What should be the filing status for USA tax purposes?

If we file as married filing jointly, do I need to report her income here? What about the taxes she is already paying in India? Or should the status be filing married filing separately or single? 

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Yeah. posted in the wrong forum by mistake and could not move it. please delete the post if possible. thanks!