The UnitedHealth Group leader whose murder in December unleashed a torrent of public frustration and dissatisfaction with the U.S. health care system was pushing for some of the very improvements that critics have been seeking.

In his first public comments since one of his executives was shot to death, UnitedHealth Group CEO Andrew Witty said the healthcare system “needs to function better.”

Click in for more news from The Hill{beacon} Health Care Health Care   The Big Story UnitedHealth CEO blames drug companies for high costsIn his first public remarks since the murder of