Gerson is a tool, and always has been.  Republicans really want to kill Medicare, but would settle for privatizing it along with Social Security.  Before the ACA, health insurance rates had been rising at rates between 7% and 9% annually.  In the first four years of the ACA, rates grew at a 3% annual average.  Yet most Americans don't know this, hence the high disapproval rate.  Before the ACA, 46% of Americans were uninsured, comprising mostly the poor including tens of millions of children.  As of March, 2016, 20 million formerly uninsured Americans got health insurance, a nearly 50% drop in the number of uninsured.    
http://www.hhs.gov/about/news/2016/03/03/20-million-people-have-gained-health-insurance-coverage-because-affordable-care-act-new-estimates

22 states have refused Medicaid expansion, leaving their poorest citizens without health care.  These are states with Republican leadership.  Does Gerson mention this?  NO, Gerson blames Obama.  Gerson is a tool.