Since Mayor Rahm Emanuel took office in 2011, aldermen have been on the defensive regarding their power. The latest attempt to retain some of that power is taking place along a stretch of 71st Street in the 5th Ward.

If Chicago wants to alleviate poverty and economic inequality, the city needs to reform its zoning laws to allow more building – not institute a new tax on development.

As Chicago’s population shrinks, Houston is set to overtake the Windy City as the third-largest city in America. Illinois’ slumping economy is a major reason for that, but the cities’ different zoning rules show how regulations can promote growth – or stifle it.

City zoning policies serve to keep many neighborhoods segregated. These rules also keep lower-income residents of all races out of popular areas, allowing city officials to shape who can live where and making housing more expensive.

Should the right to open a new business be put up to a public vote? At a meeting this week in Geneva, Ill., aldermen voted to reject tattoo artist Ramiro Guillen’s plan to open a tattoo parlor on Randall road because of opposition from other business owners. And, one alderman speculated, because of stereotypes about...