The Obamacare war is on in Congress. A top aide to House Minority Leader Nancy Pelosi sent an email to Democratic offices Thursday afternoon, warning that "Republican trackers" are on Independence Avenue asking lawmakers about the effort to rework which health care insurance members of Congress must use. One Democratic leadership aide said trackers were asking lawmakers if they thought "it's OK for members of Congress to be exempt from Obamacare?" POLITICO reported Wednesday that top congressional leaders were discussing revisions to the law, to clarify how lawmakers and staff enter exchanges and how much they would have to pay.