The man accused of killing UnitedHealthcare's CEO has been charged with murder as an act of terrorism. The killing kindled a fiery outpouring of resentment toward U.S. health insurance companies as Americans swapped stories of being denied coverage and stuck with sizeable bills. Greg Shaw, author of "The Dysfunctional Politics of the Affordable Care Act", says that private healthcare providers are paid through government systems that have very little ability to put downward pressure on prices.