How many US Presidents (or former US Presidents) have been awarded a Nobel Peace Prize?

Player #2546993, Along with learning to read there is also comprehension ..

Player Meyer, What fairy tale are you living in ?! In this country, the only candidate harder to get into the presidential office, than a black man, is a woman( of any color.) Obama's getting into office was a real miracle this country needed!

Obama got his for doing nothing. He had only been in office a few months and had accomplished nothing. What a joke!

PACAZ81, no, neither did the question

There were 4 presidents awarded the Nobel peace prize. The question did not say while in office