Could improving electric-car tax credit be possible even with today’s politics?

U.S. Capitol BuildingRather to the surprise of electric-car advocates, the massive tax bill passed by the U.S. Congress in December did not eliminate the federal tax credit for purchase of a plug-in electric vehicle. That credit lets buyers take a credit of $2,500 to $7,500 on their income-tax filing in the year of purchase. Now, financial columnist James Stewart has...