President Barack Obama, accompanied by Vice President Joe Biden, speaks in the State Dining Room of the White House in Washington, Thursday, Dec. 24, 2009, after the Senate passed  the health care reform bill. (AP Photo/Evan Vucci)AP – Two House Democrats who favor a government insurance plan, a central element of health care legislation passed in their chamber, acknowledged Sunday it might have to be sacrificed as negotiators work out a final agreement with the Senate.