Former White House Chief of Staff and currently mayor of Chicago, Rahm Emanuel, whose city is rushing to be the next Detroit after decades of big government excesses, once said that a crisis was a terrible thing to waste since it allows you to get things done you couldn’t get done in a saner atmosphere. The Amtrak derailment outside Philadelphia is the latest case in point. Never mind that the Antrak train that crashed outside Philadelphia, killing seven, was being driven at 106 miles per hour around a curve that was designed for 50 or that the “positive train control”...