Yesterday, the Journal Times endorsed the idea of a one week tax holiday on energy saving merchandise. Among the reasons why the JT considered this a good idea was that Illinois customers would "drive north, buy a whole bunch of stuff, and not pay a penny in taxes."
Perhaps so, but they would be breaking the law. Illinois buyers of Wisconsin merchandise are required to pay sales tax to the State of Illinois on those purchases. This tax is almost never collected, unless you buy a car in Wisconsin, at which point the State of Illinois will require tax payment before registering the vehicle.