A new AHA television ad urges Congress to protect health coverage for the most vulnerable as it considers legislation to repeal and replace the Affordable Care Act. The Congressional Budget Office estimates that the American Health Care Act, on which the House of Representatives could vote Thursday, would increase the number of uninsured by 14 million in 2018 and nearly 24 million over 10 years. The 30-second ad began airing this weekend on national cable and in the Washington, D.C., market.