Why is the media questioning Sarah Palin's experience and not reporting on Obama's lack of experience?

I am aware that Sarah Palin has little experience that would make a good president, but Obama who is at the top of the ticket unlike Palin is never criticized by the media for his lack of experience. He has less executive experience than Palin and for those who don't know the president is in the executive branch. Why is Obama's lack of experience not an issue? Why is Palin's lack of experience such as issue? The press has become so unethical in their bias toward Obama. They are willing to sacrifice all their ethics to get this man elected. I have stopped watching the TV and reading various accounts on line because the mainstream media is so prejudiced that it saddens me.