Political watchers speculate that Colorado's freshman U.S. Sen. Michael Bennet is playing hardball with unions and business to push for labor and health care reforms. A fellow Democrat, Colorado congressional delegation veteran Rep. Diana DeGette, says that she too will be pushing a plan, but the popular single-payer system isn't politically possible. Today TMC MediaWire Healthcare Blogger Lindsay Beyerstein points to a new negotiating tactic advanced by Ezra Klein at the American Prospect.