The payroll-tax-cut debate is not really about the payroll tax, which is a very weak-kneed economic stimulant and a lackluster job creator because of its temporary nature. Without permanent incentives at lower tax rates, these rebates don’t do anything for growth and jobs. Instead, the key to understanding the payroll-tax debate is to grasp Pres. Barack Obama’s leftist vision of taxing successful earners (the millionaire surtax) and his obsession with clean energy at the expense of fossil fuels. These are ideological positions. They support the Obama vision of class warfare and his attachment to radical environmentalism. And the key to...