Two Republican Senators, Shelley Moore Capito and Susan Collins, said they oppose Mitch McConnell's new plan to repeal Obamacare first and then replace at a later date. Capito voted for a full repeal in 2015, whereas Collins voted against that move.
Why it matters: The Republicans can only afford these two no votes. If anyone else steps up in opposition, the plan is shot.
Jerry Moran, one of the senators who stood in the way of the earlier repeal-and-replace plan, won't stand in the way of the current repeal-then-replace plan.