A conservative reading of jobs created in the last 4 years gives the housing market roughly 40% of employment gains. All Construction, 10% of finance (mortgage related) and 10% of service (mortgage servicing). (Finance and service sector jobs aren't broken down into subcategories.)
YOu need to place that particular quote in context.
Nernake was talking about a situation where traditional methods of monetary policy were exhausted and deflation was evident. In that situation, most would argue the Fed had lost all ability to influence policy. Bernanke is arguing for a non-traditional policy alternative during a tiime of near economic crisis.
Would he do that in a "normal" economic environment -- an environment where the Fed still had lower room on interest rates to go lower? I seriously doubt it
Health Care is now an issue of national competitiveness. US companies are hamstrung by having to include health costs in their financial projections while other countries provide for their citizens, lowering the cost for their businesses.