ROCK: Issue stakes claim to top
![](https://www.jaehakim.com/wp-content/uploads/1992/06/Materical-Issue_What-Girls-Want-300x300.jpg)
A huge stars-and-stripes banner emblazoned with the Arabic numeral “1” and “Material Issue” served as a not-so-subtle backdrop for the Chicago trio when it kicked off a national tour over the weekend with concerts at the Oak Theatre.