Re-Entry to US with minimum VISA expiry days


I am currently in US on H1B VISA, My current VISA is valid till 10-Mar-2013 I need to visit India next year and would return back on 1- Feb-2013. At that time there would be 37 days remaining in my current VISA expiry. My extension is still not initiated. Please suggest the possible options while port of entry.

  • If extension is not filed would there be any issues in re-entry to US with 37 days left in VISA expiry ( I would be travelling with dependents\family)

  • Should I initiate the extension before leaving for India

  • Should I initiate the extension after entering to US

Please suggest and help on the best options.