For a small-government conservative on the presidential campaign stump like Texas Gov. Rick Perry, a new federal regulation forcing farmers to get commercial drivers licenses would make a perfect example of Barack Obama’s Washington run amok. But there is no such regulation. During his debut in Iowa Sunday night in Waterloo, then again at on Monday at the Iowa State Fair Monday, Gov. Perry brought up the phantom “obscene, crazy” regulation in Texan terms. “If you’re a tractor driver, if you drive your tractor across a public road, you’re gonna have to have a commercial driver’s license. Now how idiotic...