The Obama administration announced Sunday it would keep all options on the table as it prepares to battle Republican lawmakers over a massive budget that stands to usher in historic changes in energy and health-care reform. Peter Orszag, the director of the Office of Management and Budget, refused to rule out the possibility the Obama administration would press for the use of a questionable Senate tactic in which just 50 senators would be needed to pass the controversial changes. The comment was a clear indication the White House is expecting a bruising battle over the legislation. By using the budget...