The 2008 version of Obama seemed to think it was.
Via Weekly Standard:
There was an amazing exchange today at the State Department press briefing when the press secretary refused to say that Jerusalem is the capital of the state of Israel. “We are not going to prejudge the outcome of those negotiations, including the final status of Jerusalem,” State Department spokesman Victoria Nuland said in response the question.
When pressed further, Nuland stood her ground. “Our policy with regard to Jerusalem is that it has to be solved through negotiations. That’s all I have to say on this issue,” said Nuland.
Later, an apparently irritated spokesman again repeated her commitment not to answer the simple question. “I don’t have anything further to what I’ve said 17 times on that subject,” said Nuland. “OK?”
The questions were regarding this Washington Free Beacon story that highlighted the State Department’s refusal to list Jerusalem as part of Israel.