Barack Obama's most lasting legacy won't be in the foreign policy arena. Yes, his handling of the Middle East has been disastrous, but eventually his failures will be lost in the regions constantly-shifting political sands. ObamaCare won't be his legacy either. It's a big deal now, but five years after he leaves office it will probably be a distant memory - either repealed or replaced with something even worse. No, Obama's real legacy will be similar to that of Jimmy Carter. He will have presided over a widespread economic malaise - coupled with a nonexistent "recovery" - and his tenure will be viewed as a fiscal low point for the country.
