Last year, we discussed Devin Leonard’s Bloomberg Businessweek article on the U.S. Postal Service as an illustration of the sorry state of public sector innovation in the U.S. as compared to other market democracies. Today, Peter Orszag, President Obama’s former budget director, has a Bloomberg View column calling for privatization of the USPS, and Matt Yglesias replies by calling for it to become a worker-owned cooperative.