At Salon:

On Wednesday Gov. Mitch Daniels delivered a body blow to organized labor, signing a bill making Indiana the 23rd “Right to Work” state. Daniels’ law, which unions will protest during Sunday’s Super Bowl in Indianapolis, poses a major test for Indiana’s labor movement. To survive “Right to Work,” Indiana unions will have to disregard one of the most popular arguments made recently by their supporters: that a union is a business.

Here’s the rest.