Politico: The top White House climate adviser pushed back against reports that a climate bill would be scaled back — but shied away from giving an exact time frame for when the Senate should take up the legislation. “I think predictions about when something is going to happen in the legislative process are very, very hard to make; you have to just continue working at it,’ Carol Browner told an audience assembled for a climate and energy forum. “We’re encouraged by what we are seeing, and we’re …