In the short term it will be the large number of seniors. But that will not last.
Shalom.
Those seniors will see keeping costs down as a way to preserve health care for themselves not as a threat to their individual access to treatment much less a threat to the methods of treatment. They will hang themselves on their own petards just as senior Veterans vote for Bernie Sanders to pump up Veteran's benefits at the cost of support for the active military.
The real problem is judicial overreach. The back of judicial supremacy in our tripartite system of government must be broken, and the legislative and executive branches need to be empowered to exercise their respective spheres of authority as the Founding Fathers envisioned.