Bob Franken

There are a few reasons Wisconsin Gov. Scott Walker is flying high right now in the early Republican presidential sweepstakes, but none is mightier than his record of sticking it to organized labor. This is the man who, after all, staved off a recall election once he was successful in changing state law to severely restrict the negotiating power of public-employee unions even after thousands and thousands of protesters raised a ruckus at the Capitol in Madison.

Nowadays, when he isn’t running for the White House prize, he’s back home again supporting a law that would make Wisconsin the 25th ri...