More FAKE NEWS - every respectable expert has studied and declared that the PPACA is not collapsing or failing.
Unfortunately, it has not been *untouched*.  ACA is built on essential legs:
a) all must purchase insurance or pay a fine (Trump/Repubs want to end the fine)
b) plans must include best practice coverage which covers pre-existing, maternal, substance abuse/mental health, etc.  (Cruz wants 
c)  to cover the expected annual costs (esp. since many folks had put off health/medical care for years), US would provide subsidies up to 140% of poverty, etc.
d) states could expand Medicaid (which consists of 49% children; 38% elderly; 20% disabled, etc.) & federal covers 90%
e) at risk corridors - various methods that provide re-insurance coverage, etc. since insurance companies had no idea of risk initially and congress wanted to provide coverage for losses by some companies
f) set up exchanges (individual market is only 6% of market; 80% are employer covered; Medicaid remaining market)