President Obama took off on a road trip across the Midwest last week in a brand new government-owned bus to talk with ordinary people about getting the economy going again. But Johnny Williams, an Alabama businessman who makes a living by leasing these kinds of buses to political figures, said the Obama tour was just a painful reminder of how the government is doing things that could hurt his business. That’s because this is the first presidential election where the incumbent president and the eventual Republican nominee will have the option of using a Secret Service-owned bus for campaign tours...