Quote of note:

Private insurers take, on average, 13% of premium dollars for overhead and profit. Overhead/profits are even higher, about 30%, in big managed care plans like U.S. Healthcare. In contrast, overhead consumes less than 2% of funds in the fee-for-service Medicare program, and less than 1% in Canada’s program.

...According to U.S. Congress’ General Accounting Office, administrative savings from a single payer reform would total about 10% of overall health spending. These administrative savings, about $100 billion annually, are enough to cover all of the uninsured, and virtually eliminate co-payments, deductibles and exclusions for those who now have inadequate plans - without any increase in total health spending.

Why the US Needs a Single Payer Health System
June 29, 1995
by David U. Himmelstein, MD & Steffie Woolhandler, MD
Our pluralistic health care system is giving way to a system run by corporate oligopolies. A single payer reform provides the only realistic alternative.