Speaking in the East Room before a supportive audience Thursday, President Obama said the fact that middle-class Americans were receiving rebates from their insurers was "just an example of the Affordable Care Act doing what it's designed to do: deliver more choices, better benefits, a check on rising costs, and higher quality care."

Obama's remarks came the morning after the House of Representatives took its 38th and 39th votes to repeal or change the health care law, which is shaping up to be a central issue in next year's election. As the Oct. 1 starting date for open enrollment in state and federal health insurance marketplaces approaches, Democrats and Republicans are offering competing data in an effort to sway Americans' attitudes about the landmark bill.