While some progressives campaigned this week for “Medicare for all,” a group of moderate House Democrats aligned themselves with a more modest push to stabilize the ACA, arguing that it could spur broader health care reforms in the future. Thirty-five of the 61 members of the New Democrat Coalition sent a letter Friday urging the leaders of the Senate Health, Education, Labor and Pensions Committee to agree on a bipartisan bill to keep premiums from rising further for Obamacare enrollees next year.