Can I use a foreign power cord to power my MacBook?
Yes, the MagSafe power adapters support dual voltage (100-240V).

According to the specs on Amazon for the 85W version:


  Input: AC 100V~240V 50/60Hz


So long as the local input provides power in that range, you'll be able to get a local MagSafe compatible cord and your US MBP will be fine.