Walmart and Washington have become the newest combatants in the war over wages. On July 10, the D.C. council passed a "living wage" bill requiring nonunion retailers with more than 75,000 sq. ft. of space and parent-company revenue of $1 billion or more to pay workers a minimum of $12.50 an hour. Guess which company fits the bill. In response, Walmart has vowed to cancel three planned Washington-area stores and halt construction on three others if the bill becomes law, leaving 1,800 jobs in the lurch.
Since Baltimore pioneered the idea in 1994, living-wage laws have spread to more than 140...