http://www.msnbc.msn.com/id/30679730 Hospitals, insurance companies, drug makers and doctors told Obama in a letter that they will voluntarily slow their rate increases in coming years in a move that government economists say would create breathing room to help provide health insurance to an estimated 50 million Americans who now go without it. By joining Obama, providers are acknowledging at least some responsibility for a bloated and dysfunctional system that economists say is unaffordable. The groups don't just have the national interest in mind. Industry is worried that Congress will create a government health plan to compete with private insurers. Such a plan would quickly become the biggest in the country and could use its power to set lower payment rates, driving costs down on the backs of medical providers.