Obama was stating that McCain was not spreading fake news. You fell for a false story spread by people who lifted Obama's statement out of its context and twisted it to mean the opposite of what Obama intended. Here is the rest of what Obama said in that interview with George Stephanopoulos:

"[McCain] hasn’t suggested that I’m a Muslim, and I think that his campaign upper echelons haven’t either. What I think is fair to say is that coming out of the Republican camp, there have been efforts to suggest that perhaps I’m not what who I say I am when it comes to my faith, something which I find deeply offensive, and that has been going on for a pretty long time"

You are spreading lies, as are others who liked your post.