"A network of health insurance plans run by the customers they serve, proposed in the U.S. Congress to offset opposition to a government-run system, may take a generation to pay off, even with $10 billion in seed money," Bloomberg reports. The co-ops, according to Sen. Kent Conrad, D-N.D., who first floated the idea last month could lower costs, cover more Americans, and gain bipartisan support. President Obama said in late June that he was "open" to the idea. However, based on the experience of existing co-ops, the plan could take decades to develop into an effective mechanism for achieving those...